解方程组{（x+2）^2-(y-3)^2=(x+y)(x-y) {x-3y=2 解方程组{3x+2y=7 {2x+3y=

解二元一次方程组:{5(x+y)+3(x-y)=2{7(x+y)-3(x-y)=-6 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)(x-2y)=-5 (x-y)(x+2y)=7 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 如果方程组3x+y=k x+3y=2的解x,y 解方程组：{x+|3x-y|+3y=15 2x+y=6 解方程组x+y/3=x-y/4 2x+3y=11 用代入法解方程组:y=3(x-y),x=2(x-y) 解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12) 求x+y/3+x-y/2=6 3(x+y)-2(x-y)=28方程组的解