解方程组X+Y/2=3X-2Y=10+6X+Y/4
解方程组:{x+|3x-y|+3y=15 2x+y=6
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
已知方程组2x+y=6,x+2y=9,则x+y=() x-y=() ?
解方程组{4/x+y+6/x-y=3, 9/x-y-1/x+y=1
解方程组:{4/x+y+6/x-y=3 9/x-y-1/x+y=1}
解方程组 2x+y(y-2x)=9 (x+y)(x+y-3)=10
解方程组:2/(x+y)+5/(x-y)=18 9/(x+y)-10/(y-x)=66
解方程组:2/(x+y)+5/(x-y)=18 9/(x+y)-10/(y-x)=66
求x+y/3+x-y/2=6 3(x+y)-2(x-y)=28方程组的解
解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16