解方程组 2x+y=3,x+2y=-6

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 求x+y/3+x-y/2=6 3(x+y)-2(x-y)=28方程组的解 3/x+y+2/x-y=6,3（x+y)-2(x-y)=28解这个方程组 解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4 解方程组：2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 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/3-x+y/4=2 x-y/6-x+y/8=3 2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组 解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1 解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12