解方程组:3(x+y)+2(x-y)=11,6(x+y)-5(x-y)=13.
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
解二元一次方程组:{5(x+y)+3(x-y)=2{7(x+y)-3(x-y)=-6
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
解方程组x+y/3=x-y/4 2x+3y=11
解方程组:{x+|3x-y|+3y=15 2x+y=6
解方程组X+Y/2=3X-2Y=10+6X+Y/4
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
求x+y/3+x-y/2=6 3(x+y)-2(x-y)=28方程组的解