解方程组2x+3y=-8,7x+6y=2 x=?,y=?

解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7 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 解方程组﹛2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 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2x+3y=-8,7x+6y=2 x=?,y=? 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