{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
2(x-y)/3-(x+y)/4=-1.1
6(x+y)-4(2x-y)=16 .2
由1式得
8(x-y)-3(x+y)=-12
8x-8y-3x-3y=-12
5x-11y=-12.3
由2式得
6x+6y-8x+4y=16
-2x+10y=16
x-5y=-8.4
3式-4式*5得
14y=28
y=2
将y=2代入4式得
x-5*2=-8
x=2
所以x=2,y=2