解方程组1,2(x+1)-3(x-1)=10 2,2(x=1)+7(y-1)=20

解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12) 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｛ 3x-4y(x-y)=3 { 2x-3y=1 解方程组：解方程组：｜X+Y｜=1｜X｜+2｜Y｜=3 解方程组：x/2+y/3=1 x*20%+y*30%=14*10% 解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5) 数学书解方程组{2(x+y)-(x-y)=3,（x+y)-2(x-y)=1 解方程组：2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16 解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1 解二元一次方程组{3(x+y)-4(x-y)=4,x+y/2+x-y/6=1 解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1