作业帮6(x+y)=4(2x-y)+16,2(x-y)/3=x+y/4-1
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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
2(x-y)/3-(x+y)/4=-1.16(x+y）-4(2x-y)=16.2由1式得8(x-y)-3(x+y)=-128x-8y-3x-3y=-125x-11y=-12.3由2式得6x+6y-8x+4y=16-2x+10y=16x-5y=-8.43式-4式*5得14y=28y=2将y=2代入4式得x-5*2=-8x=2所以x=2,y=2
收起
（x+y）/2- x-y/2=6 3(x+y)=4(x-y)
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
解方程组 10（x-y)=3(x+y)+15 6(x+y)=4(2x-y)+1610（x-y)=3(x+y)+156(x+y)=4(2x-y)+16
解方程组 10（x-y)=3(x+y)+15 6(x+y)=4(2x-y)+1610（x-y)=3(x+y)+156(x+y)=4(2x-y)+16分开的。
2(x-y)/3-(x+y)/4=-1 (1) 6(x+y)-4(2x-y)=16 (2)
(2x-2y)/3-(x-y)=-1和6(x+y)-4(2x-y)=16
解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16
解方程组：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解方程
6(x+y)=4(2x-y)+16,2(x-y)/3=x+y/4-1
2(x-y)/3—x+y/4=1 6(x+y)—4(2x-y)=16
8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16
8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16