解方程组{x-2y=4 x+y=1
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
要求 解方程组:{(X-1)(Y+1)=(X+1)(Y+1){X(2+Y)-6=Y(X-4)
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
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)-(x-y)=4,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,√(x+1/y)+√(x-y-2)=4 2x-y+1/y=10
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
解方程组X+Y/2=3X-2Y=10+6X+Y/4
解方程组x+y/3=x-y/4 2x+3y=11
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7