2(x-y)/3 =x+y/4-1,6(x+y)=4(2x-y)+16
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2(x-y)/3 =x+y/4-1,6(x+y)=4(2x-y)+16
2(x-y)/3 =x+y/4-1,6(x+y)=4(2x-y)+16
2(x-y)/3 =x+y/4-1,6(x+y)=4(2x-y)+16
解
2(x-y)/3=(x+y)/4-1
两边同时乘以12得:8(x-y)=3(x+y)-12
即5x-11y=-12 ①
6(x+y)=4(2x-y)+16
即x-5y=-8 ②
②×5得:5x-25y=-40 ③
①-③得:14y=28
∴y=2,x=2