解方程组(2x-3/x)^2+5+12x=18/x
解方程组(2x-3/x)^2+5+12x=18/x
解方程组:x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组(x+2)
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:{y+2=1-x 3x+2y=-3 {3x+2y=5x+2 2(3x+2y)=11x+7 {12分之x+18分
解方程组 3(x-1)+1>5x-2(1-x) 5-(2x-1)
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
解方程组:2(2x-1)-3(5x+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: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
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组