方程组：(1/x+1)+(2/6y-3)=1 (1/2x-2)-(1/2y-1)=0,解x、y.1/（x-1）+2/（6y-3）=1,1/（2x-2)-1/（2y-1)=0，那个错了，

已知方程组{2x+y=6,x-3y=1,不解方程组,求7y(x-3y)²-(3y-x)²的值.已知方程组{2x+y=6,{x-3y=1.不解方程组,求7y(x-3y)²-(3y-x)²的值.已知方程组{2x+y=6，{x-3y=1.不解方程组，求7y(x-3y)²-(3y-x)³ 已知方程组2X+Y=6和X-3Y=1不解方程组,求7Y(X-3Y)^2-(3Y-X)^3 1/2x-2y=-74,x-6y=-12解方程组,x／5-y／2=2,2x+3y=4解方程组 一道很简单的方程组3（x+y）-4(x-y)=4(x+y)/2+(x-y)/6=1是方程组啊. 利用图像解方程组解方程组2x-y=1,x+2y=3 解方程组：解方程组：｜X+Y｜=1｜X｜+2｜Y｜=3 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)=1 6(x+y)+7(x-y)=51 解方程组 解方程组﹛2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解二元一次方程组3(x+y)-4(x-y)=4 x+y/2+x-y/6=1 解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1kkkkkkkk 解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1 解方程组3(x+y)-4(x-y)=4,x+y除以2+x-y除以6=1 解方程组{2(x-y)/3 - x+y/4=-1 6(x+y)-41(x-y)=12 解方程组8/(x+y) +(x-y)/2=3,6/(x+y)-(x-y)/4=1 一道二元一次方程组!3(x+y)-4(x-y)=4,(x+y)/2+(x-y)/6=1 解方程组{x/3+(y-x)/2=2 y-1/2=x-6