解方程组:(1)2x-y=6x+2y=-2
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
要求 解方程组:{(X-1)(Y+1)=(X+1)(Y+1){X(2+Y)-6=Y(X-4)
2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组
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﹛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=1
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 2x+y=(4x-y-1)/2=(10+6x+2y)/4
解方程组:4(x+1)=3(y+3) x-2y=7y-6x/3
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
利用图像解方程组:(1) {2y-x=-6 {y+3x=4