2x+2y=10 x-y=5 求X,Y
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2x+2y=10x-y=5求X,Y2x+2y=10x-y=5求X,Y2x+2y=10x-y=5求X,Y2x+2y=10即x+y=5x-y=5两式相加得2x=10x=5代入x-y=5得y=0解为x=5y
2x+2y=10 x-y=5 求X,Y
2x+2y=10 x-y=5 求X,Y
2x+2y=10 x-y=5 求X,Y
2x+2y=10即x+y=5
x-y=5
两式相加得
2x=10
x=5代入x-y=5 得y=0
解为
x=5
y=0
2x+2y=10 x-y=5
x+y=5
x=5，y=0
2*x+2*y=10
x-y=5
x=5
y=0
x+y=10/2=5
x-y=5
2x=10
x=5
y=0
X等于二十二分之十五，Y等于十一分之二十。
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