解方程组 X-Y÷2 - 1 =2x+y÷23x+y÷3+2 =x-y÷3

解方程组 X-Y÷2 - 1 =2x+y÷23x+y÷3+2 =x-y÷3 [x(x-y)-y(x-y)+(x+y)(x-y)]÷2x其中x=2012 y=2013 解方程组｛ 3x-4y(x-y)=3 { 2x-3y=1 解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12) 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 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﹛2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 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