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x+y=68x*6%+y*5%=3.82解得x=42,y=26
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x+y=68 x*6%+y*5%=3.82 解得x=42,y=26
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答案和解析
x+y=68
x*6%+y*5%=3.82
x+y=68
1.2x+y=76.4
0.2x=8.4
x=8.4/0.2
x=42
42+y=68
y=68-42
y=26
x*6%+y*5%=3.82
x+y=68
1.2x+y=76.4
0.2x=8.4
x=8.4/0.2
x=42
42+y=68
y=68-42
y=26
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