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