解方程组{y-1=x-y,x-y=37-x

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 解关于X,Y的方程组 {x+y=a （a-1)x+y=5 解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5) 要求 解方程组：｛(X-1)(Y+1)=(X+1)(Y+1)｛X(2+Y)-6=Y(X-4) 解方程组{4/x+y+6/x-y=3, 9/x-y-1/x+y=1 解方程组：{4/x+y+6/x-y=3 9/x-y-1/x+y=1} 数学书解方程组{2(x+y)-(x-y)=3,（x+y)-2(x-y)=1 用加减法解方程组:{(x+y)/6+(x-y)/10=3 (x+y)/6+(y-x)/10=-1 2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组 解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12) 解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1