解方程组{2x-4y=8,x-2y=-4一个打错了：x+2y=-4

解方程组 4(x+y)-(2x-y)=14 ,3(x+y)-2(2x-y)=8 解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3 解方程组8/(x+y) +(x-y)/2=3,6/(x+y)-(x-y)/4=1 解方程组8y+5x=84y-3x=7 方程组 因式分解 4x^3-4x^2y-(x-y) 解方程组,x+y/2=3x-2y=10+6x+y/4, 解方程组3x+5(x+y)=2 3y-2(x+y)=4 方程组x-2y=8,3x-4y=5,x=?,y=? 解方程组｛ 3x-4y(x-y)=3 { 2x-3y=1 解方程组x+y/3=x-y/4 2x+3y=11 3(x+y)-2(x-y)=4; 3(x+y)+2x-2y=8 3(x+y)-2(x-y)=4; 3(x+y)+2x-2y=8 解方程组 解方程组x^2-y^2=x+y 4x^2-y^2+2x-y=0过程 解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16 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)-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=1kkkkkkkk 3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组 解方程组3(x+y)-4(x-y)=4,x+y除以2+x-y除以6=1 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2