% %ȉ̕RgƂ̂łC_ł͂܂ł܂B
% ̃^Cg
[Title]
204_NZ
% 蕶
% Ȃ΁C[Level1]ɏ̂̂܂ܖ蕶ƂȂB
[Problem]
̖₢ɓB
% tHg̑傫B1`10C܂TeX̃R}hw肷B
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[FontSize]
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% vAuɒǉpbP[Wt@Cw肷B
[usepackage]
\usepackage{color}
\usepackage{amsmath,amssymb}


% ꂼ̖𓚂$\displaystyle $tꍇ́C@ON ܂1
% ꂼ̖𓚂$\displaystyle $tȂꍇ́COFF܂0
% up̕ҏWv|u[U[ݒv̉ɂݒ
% @@@@@@@@@@@@@@@@@ꍇɎw肵ĂB
% LqȂ΁Cup̕ҏWv|u[U[ݒv
% @@@@@@@@@@@@@@@@@@@ɂݒ肪D悳܂B
[displaystyle]
OFF


% Level1̖BȉLevel7܂œlB
% 1sڂɂ͏ڍאݒ̃^CgB
% 2sڈȍ~ɖƂ̉𓚂B
% Ɖ𓚁C𓚂Ɩ͂PsďB
% vZߒꍇ́CƉ𓚂̊ԂɂPsԊuC
% ŏprocessƂsC̎̍svZߒĂB
[Level1]
݂̔NĂƂ
49΂łB͖̔N3{1ΑNłB
ݖ͉΂łH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cc}
  &  \\
 \hline
  & 49 \\
 \hline
  & $x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
݂̖̔N$x$ƂƁCӂC\\
$49=3x+1@x=16$

16

݂̔̕N38΁Cq̔N2΂łB̔Nq̔N4{ɂȂ͉̂NォH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccccc}
  &  & PN & c & HN\\
 \hline
  & 38 & 39 & c& $4x$ \\
 \hline
 q & 2 & 3 & c & $x$ \\
 \hline
  & 36 & 36 & c& $3x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
HN̎q̔N$x$ƂBN̍͏Ɉ肾C\\
$3x=36@x=12$ \\
$12-2=10N$

10N

݁C42΁Cq16΂łB̔Nq̔N3{͉̂NOłH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  & ߋ & c & \\
 \hline
  & $3x$ & c& 42 \\
 \hline
 q & $x$ & c & 16 \\
 \hline
  & $2x$ & c& 26 \\
 \hline
\end{tabular}
\end{center}
\end{table}
ߋ̎q̔N$x$ƂBN̍͏Ɉ肾C\\
$2x=26@x=13$ \\
$16-13=3NO$

3NO

݁C27΁Cq6΂łB̔Nq̔N4{ɂȂ͉̂NłH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & HN\\
 \hline
  & 27 & c& $4x$ \\
 \hline
 q & 6 & c & $x$ \\
 \hline
  & 21 & c& $3x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
HN̎q̔N$x$ƂBN̍͏Ɉ肾C\\
$3x=21@x=7$ \\
$7-6=1N$

1N

݂̔̕N37΂ŁCq̔N5΂łB̔Nq̔N2{ɂȂ͉̂NォB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & HN\\
 \hline
  & 37 & c& $2x$ \\
 \hline
 q & 5 & c & $x$ \\
 \hline
  & 32 & c& $x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
HN̎q̔N$x$ƂBN̍͏Ɉ肾C\\
$2x-x=x=32@x=32$ \\
$32-5=27N$

27N

݁CA̔N25΁CB̔N39΂łB
B̔NA̔N3{ł̂͂H

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  & HNO & c & \\
 \hline
 B & $3x$ & c& 39 \\
 \hline
 A & $x$ & c & 25 \\
 \hline
  & $2x$ & c& 14 \\
 \hline
\end{tabular}
\end{center}
\end{table}
HNOA̔N$x$ƂBN̍͏Ɉ肾C\\
$2x=14@x=7$ \\
$25-7=18NO$

18NO

28΁Cq4΂̐eqŁC̔Nq̔N3{ɂȂ̂́Cq΂̂ƂH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & HN\\
 \hline
  & 28 & c& $3x$ \\
 \hline
 q & 4 & c & $x$ \\
 \hline
  & 24 & c& $2x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
HN̎q̔N$x$ƂBN̍͏Ɉ肾C\\
$2x=24@x=12$

12

31΁C3΂̐eqŁC̔N̔N5{ɂȂ̂́CNォH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & HN\\
 \hline
  & 31 & c& $5x$ \\
 \hline
  & 3 & c & $x$ \\
 \hline
  & 28 & c& $4x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
HN̖̔N$x$ƂBN̍͏Ɉ肾C\\
$4x=28@x=7$ \\
$7-3=4N$

4N

40΂Ŏq4΂łB̔Nq̔N3{ƂȂ̂͂H

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & HN\\
 \hline
  & 40 & c& $3x$ \\
 \hline
 q & 4 & c & $x$ \\
 \hline
  & 36 & c& $2x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
HN̎q̔N$x$ƂBN̍͏Ɉ肾C\\
$2x=36@x=18$ \\
$18-4=14N$

14N

NCo6΂Ŗ1΂łBo̔N̔N2{ɂȂ͉̂NォH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & $?N$\\
 \hline
 o & 6 & c & $2x$ \\
 \hline
  & 1 & c & $x$ \\
 \hline
  &  5   & c & $x$     \\
\end{tabular}
\end{center}
\end{table}
?N̖̔N$x$΂ƂƁC\\
$x=5@?=5-1=4$N

4N

݁Cc72΁C42΂łBc̔N̔N2{ɂȂ͉̂NOłB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  & ?NO &  \\
 \hline
 c & $2x$ & 72 \\
 \hline
  & $x$ & 42 \\
 \hline
  & $x$ & 30 \\
 \hline
\end{tabular}
\end{center}
\end{table}
?NO̔̕N$x$ƂƁC\C\\
$x=30$BāC$42-30=12NO$

12NO

CYN̔N9΂ŁC̔N37΂łB
̂ƂC̔NYN̔N3{ɂȂ̂́C
牽NォB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & ?N \\
 \hline
  & 37 & $3x$ \\
 \hline
 Y & 9 & $x$ \\
 \hline
  & 28 & $2x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
?N̑Y̔N$x$ƂƁC\C\\
$2x=28$B$x=14$BāC$14-9=5N$

5N

݁C12΁C37΂łB
$\displaystyle \frac{1}{2}$̔NɂȂ̂́CNłB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & ?N \\
 \hline
  & 37 & $2x$ \\
 \hline
  & 12 & $x$ \\
 \hline
  & 25 & $x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
?N̎̔N$x$΂ƂƁC\C\\
$x=25$BāC$25-12=13N$

13N

݁C37΁Cc62΂łB
ꂪc$\displaystyle \frac{1}{2}$̔NɂȂ̂́CNOłB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  & ?NO &  \\
 \hline
 c & $2x$ & 62 \\
 \hline
  & $x$ & 37 \\
 \hline
  & $x$ & 25  \\
 \hline
\end{tabular}
\end{center}
\end{table}
?NO̔̕N$x$΂ƂƁC\C\\
$x=25$BāC$37-25=12NO$

12NO

NC46΂ŁĈq12΂łB
艽NɁC̔N͂̂q̔N3{ɂȂ܂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & ?N \\
 \hline
  & 46 & $3x$ \\
 \hline
 ̂q & 12 & $x$ \\
 \hline
  & 34 & $2x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
?N̎̔N$x$΂ƂƁC\C\\
$2x=34$B$x=17$BāC$17-12=5N$

5N

NC42΁Cqǂ̔N16΂łB
̔Nqǂ̔N2{ɂȂ͉̂NłB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & ?N \\
 \hline
  & 42 & $2x$ \\
 \hline
 q & 16 & $x$ \\
 \hline
  & 26 & $x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
?N̎qǂ̔N$x$΂ƂƁC\C\\
$x=26$BāC$26-16=10N$

10N

30΂̕e琶܂ꂽq΂ɂȂƂC̕e̔Nq7{ɂȂ܂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  &  c & HN\\
 \hline
  & 30 & c& $7x$ \\
 \hline
 q & 0 &  c & $x$ \\
 \hline
  & 30 &  c& $6x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
HN̎q̔N$x$ƂBN̍͏Ɉ肾C\\
$6x=30 \therefore x=5$ \\

5

45΂őq13΂łB̔Nq3{ɂȂ͉̂Nł傤B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & ?N \\
 \hline
  & 45 & $3x$ \\
 \hline
 q & 13 & $x$ \\
 \hline
  & 32 & $2x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
?N̎qǂ̔N$x$΂ƂƁC\C\\
$2x=32 \therefore x=16$BāC$16-13=3N$

3N

`65΂ła29΂łBNOɂ`̔N͂a̔N4{ł傤B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
      & ?NO &  \\
 \hline
 A & $4x$ & 65 \\
 \hline
 B & $x$ & 29 \\
 \hline
  & $3x$ & 36 \\
 \hline
\end{tabular}
\end{center}
\end{table}
?NOB̔N$x$΂ƂƁC\C\\ 
$3x=36 \therefore x=12$BāC$29-12=17$NO

17NO










[Level2]
݂̔NŝƂ
݂̔̕N47΁Cq݂̌̔N$x$΂łB
ꂩ5Nɂ́C̔N͎q̔N4{ɂȂB
̂ƂC݂̎q̔N߂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & 5N\\
 \hline
  & 47 & c & 52 \\
 \hline
 q & $x$ & c & 13 \\
 \hline
  & & c & 39 \\
\end{tabular}
\end{center}
\end{table}
5N̔̕N$47+5=52$ \\
5N̎q̔N$52\div 4=13$ \\
݂̎q̔N$13-5=8$iʁj$47-x=39$

8

͌52΂łB5Nɑq̔N3{ɂȂƂB݂̑q̔N͉΂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & 5N\\
 \hline
  & 52 & c & 57 \\
 \hline
 q & $x$ & c & $x+5$ \\
 \hline
  &     & c &      \\
\end{tabular}
\end{center}
\end{table}
݂̑q̔N$x$ƂBӂ\\
$57=3(x+5)@x=14$

14






[Level3]

̔N41΁C͎q̔N4{3ΏȂBq̔N͉΂H

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cc}
  &  \\
 \hline
  & 41 \\
 \hline
 q & $x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
݂̎q̔N$x$ƂƁCӂC\\
$41=4x-3@x=11$

11


݁C̔N50΁C2l̎qǂ̔N3΂6΂łB
̔Nqǂ̔N̘a4{ɂȂ̂͂łH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & $xN$\\
 \hline
  & 50 & c& $50+x$ \\
 \hline
 qA & 6 & c & $6+x$ \\
 \hline
 qB & 3 & c & $3+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
$50+x=(2x+9) \times 4$\\
$x=2$

2N

݁C3loACBCC̔N̍v14΂ŁCꂳ38΂łB
牽NɁĈꂳ̔N3l̎qǂ̔N̍vƓɂȂ܂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & $x$N \\
 \hline
  & 38 & $38+x$ \\
 \hline
 ACBCC̘a & 14 & $14+3x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
$x$NƂƁC$38+x=14+3x$B$x=12$

12N

݁C42΂ŁC40΁C2l̎qǂ͂ꂼ12΂10΂łB
e̔N̘aC2l̔N̘a2{ɂȂ̂́C牽NłB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
    &  & $x$N \\
 \hline
  & 42 & $42+x$ \\
 \hline
  & 40 & $40+x$ \\
 \hline
 A & 12 & $12+x$ \\
 \hline
 B & 10 & $10+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
ӂC\\
$82+2x=2(22+2x)$B$82+2x=44+4x$B$38=2x$B$x=19$

19N

݁C38΂ŁC2l̎qǂ͂ꂼ12΂10΂łB
2l̎qǂ̔N̔N̘aC̔NƓɂȂ̂́C牽NłB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
    &  & $x$N \\
 \hline
  & 38 & $38+x$ \\
 \hline
 A & 12 & $12+x$ \\
 \hline
 B & 10 & $10+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
ӂC\\
$38+x=22+2x$B$x=16$

16N

NC38΁C36΂ŁC4l̎qǂ12΁C9΁C7΁C4΂łB
Nɕ̔N̘aC4l̎qǂ̔N̘aɓȂ܂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
    &  & $x$N \\
 \hline
  & 38 & $38+x$ \\
 \hline
  & 36 & $36+x$ \\
 \hline
 A & 12 & $12+x$ \\
 \hline
 B & 9 & $9+x$ \\
 \hline
 C & 7 & $7+x$ \\
 \hline
 D & 4 & $4+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
ӂC\\
$74+2x=32+4x$B$2x=42$B$x=21$B

21N

̔N50΁Cj̔N16΁Cj̔N12΂łBq̔N̍v̔NƓȂ͉̂Nł傤B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
    &  & $x$N \\
 \hline
  & 50 & $50+x$ \\
 \hline
  & 16 & $16+x$ \\
 \hline
  & 12 & $12+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
ӂC\\
$50+x=28+2x$B$x=22$B

22N

݁C̔N͎q̔N3{łB
6Nƕ̔N͎q̔N2.5{ɂȂ܂B
݂̌̔N͉΂łB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & 6N \\
 \hline
  & $3x$ & $3x+6$ \\
 \hline
 q & $x$ & $x+6$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
݂̎q̔N$x$΂ƂƁCӂC\\
$3x+6=2.5(x+6)$B$3x+6=\displaystyle \frac{5}{2}(x+6)$B\\
$6x+12=5x+30$B$x=18$B$3x=3 \times 18=54$

54

̔N͎q̔N30ΑC8Nɂ́C̔NƎq̔N̘a56΂ɂȂB
݂̎q̔N߂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & 8N\\
 \hline
  & $x+30$ & c & $x+38$ \\
 \hline
 q & $x$ & c & $x+8$ \\
 \hline
  & 30 & c & 30 \\
\end{tabular}
\end{center}
\end{table}
݂̎q̔N$x$ƂƁCӂC\\
$(x+38)+(x+8)=56@x=5$

5

̔N͎q̔N30ΑC7NOɂ́C̔N͎q̔N7{łB
݂̎q̔N͉΂H

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  & 7NO & c & \\
 \hline
  & $x+23$ & c & $x+30$ \\
 \hline
 q & $x-7$ & c & $x$ \\
 \hline
  & & c & 30 \\
\end{tabular}
\end{center}
\end{table}
݂̎q̔N$x$ƂƁCӂC\\
$x+23=7(x-7)@x=12$

12

݁CƎq̔N̘a68΂łB10NOC̔N͎q̔N3{łB
݂̎q̔N͉΂łH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  & 10NO & c & \\
 \hline
  & $3x$ & c & $3x+10$ \\
 \hline
 q & $x$ & c & $x+10$ \\
 \hline
  &     & c &      \\
\end{tabular}
\end{center}
\end{table}
10NO̎q̔N$x$΂ƂƁC\\
ӂC$(3x+10)+(x+10)=68@x=12$ \\
݂̎q̔N$x+10=22$

22

݁C̔N͎q̔N9{łB
12Nɂ͕̔N͎q̔N3{ɂȂB
݂̔̕N͉΂H

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  &  & c & 12N\\
 \hline
  & $9x$ & c & $9x+12$ \\
 \hline
 q & $x$ & c & $x+12$ \\
 \hline
  &     & c &      \\
\end{tabular}
\end{center}
\end{table}
݂̎q̔N$x$ƂBӂ\\
$9x+12=3(x+12)@x=4$ \\
݂̔̕N$9x=9 \times 4=36$ 

36

2NOɕ̔N͑q̔N5{łC6Nɂ͕̔N͑q̔N3{ɂȂ܂B
݁C̔N͉΂łH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccccc}
  & 2NO &  & c & 6N\\
 \hline
  & $5x$ & c& c & $5x+8$ \\
 \hline
 q & $x$ & c & c& $x+8$ \\
 \hline
  &     & c & c&      \\
\end{tabular}
\end{center}
\end{table}
2NȎq̔N$x$΂ƂƁCӂC\\
$5x+8=3(x+8)@x=8$ \\
݁C̔N$5x+2=5 \times 8 +2=42$

42

݂̕e̔ŃCq̔N3{1ΎႭC12Nɂ́Ce̔Nq̔N2{ɂȂB
݂̕e̔NƎq̔N߂B

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & 12N \\
 \hline
  & $3x-1$ & $3x+11$ \\
 \hline
 q & $x$ & $x+12$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
݂̎q̔N$x$΂ƂƁCӂC\\
$3x+11=2(x+12)$B$x=13$B\\
$3x-1=3 \times 13-1=38$

e38΁Cq13

Ǝq̔N32΂łB
10NɁC̔Nq̔N3{ɂȂ܂B
݂̔̕N߂ȂB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{ccc}
  &  & 10N \\
 \hline
  & $x$ & $x+10$ \\
 \hline
 q & $x-32$ & $x-22$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
݂̔̕N$x$΂ƂƁCӂC\\
$x+10=3(x-22)$B$x=38$B\\

38

݁Ce̔N$40$΁C2l̎q̔N͂ꂼ10΂7΂łB
q̔N̘a߂ĕe̔NȏɂȂ̂
\fbox{\bf CE }NłB

process
$17+2x\geqq 40+x$\\
$x \geqq 23$
\begin{table}[!hbt]
\begin{center}\begin{tabular}{|c|c|c|}
\hline
       &  & $x$N \\ \hline
    & 40 & $40+x$ \\ \hline
  q  & 10 & $10+x$ \\ \hline
  q  &  7  & $7+x$ \\ \hline
\end{tabular}\end{center}\end{table}

$23$







[Level4]
p
݁CB12΂łB
B͂ꂳ25΂̂Ƃɐ܂C͂ꂳ̔NB̔N6{̂Ƃɐ܂܂B
݁C͉΂łH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccccc}
 & Ba& c & a & c & \\
 \hline
  & 25 & c & $6x$ & c& \\
 \hline
 B & 0 & c & $x$ & c& 12 \\
 \hline
  &  & c & 0 & c& H\\
 \hline
 B̍ & 25 & c& $5x$ & c& \\
 \hline
\end{tabular}
\end{center}
\end{table}
܂ꂽƂB̔N$x$ƂBB̔N̍͏Ɉ肾C\\
$5x=25$@$x=5$ \\
̔N$12-5=7$

7

YN͌12΂łBYN͕ꂪ24΂̎ɐ܂C
͕̔NYN̔N5{̎ɐ܂܂B
݂̌̔ŃC΂łB

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
  & Ya & a &  \\
 \hline
  & 24 & $5x$ &  \\
 \hline
 Y & 0 & $x$ & 12 \\
 \hline
  &     & 0 &  \\
 \hline
 ƑY̍ & 24 & $4x$ &  \\
 \hline
\end{tabular}
\end{center}
\end{table}
܂ꂽƂ̑Y̔N$x$΂ƂƁC\C\\
$4x=24$B$x=6$B\\
āC$12-6=6$΁B

6

݁C50΁C48΂ŁC2l̎q̔N19΂14΂łB
̔N̘aq̔N̘a2{ɂȂ͉̂NォH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
 &  & c & $x$N\\
 \hline
  & 50 & c & $50+x$ \\
 \hline
  & 48 & c & $48+x$ \\
 \hline
 qA & 19 & c & $19+x$ \\
 \hline
 qB & 14 & c & $14+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
$x$NƂƁC\\
$(50+x)+(48+x)=2\{(19+x)+(14+x)\}$ \\
$x=16$

16N

݁C40΁CAN11΁C8΂łBANƒ̔N̘a̔NƓɂȂ͉̂NłH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
 &  & c & $x$N\\
 \hline
  & 40 & c & $40+x$ \\
 \hline
 A & 11 & c & $11+x$ \\
 \hline
  & 8 & c & $8+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
$x$NƂBӂC\\
$19+2x=40+x@x=21N$

21N

݁C40΁C38΁CAN11΁C8΂łB
e̔N̘aANƒ̔N̘a2{ɂȂ͉̂NłH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
 &  & c & $x$N\\
 \hline
  & 40 & c & $40+x$ \\
 \hline
  & 38 & c & $38+x$ \\
 \hline
 A & 11 & c & $11+x$ \\
 \hline
  & 8 & c & $8+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
$x$NCӂ\\
$78+2x=2(19+2x)$\\
$x=20N$

20N

݁C52΁C44΂łB3l̎q̔N16΁C11΁C9΂łB
̔N̘a3l̎q̔N̘a2{ɂȂ͍̂牽NłH

process
\begin{table}[!h]
\begin{center}
\begin{tabular}{cccc}
 &  & c & $x$N\\
 \hline
  & 52 & c & $52+x$ \\
 \hline
  & 44 & c & $44+x$ \\
 \hline
 qA & 16 & c & $16+x$ \\
 \hline
 qB & 11 & c & $11+x$ \\
 \hline
 qC & 9 & c & $9+x$ \\
 \hline
\end{tabular}
\end{center}
\end{table}
$x$NƂƁCӂC\\
$96+2x=2(36+3x)$@$x=6$

6N








[Level5]




[Level6]


[Level7]


[EOF]
% t@C̍Ōɂ
