解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27

解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27 解方程组x+y/3=x-y/4 2x+3y=11 3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组 解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12 解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7 3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 3（x+y）－4（x－y）=11 2（x－y）+5（x+y）=27 解这个两元一次方程组 解方程组｛ 3x-4y(x-y)=3 { 2x-3y=1 解方程组X+Y/2=3X-2Y=10+6X+Y/4