x/3=y/4 x+2y=-11怎么解
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27
解方程组x+y/3=x-y/4 2x+3y=11
5x+4y=22 4x+y=3y+x 怎么解
(3x-5y-11)*(3x-5y-11)+|9x+2y-16|=0怎么解?
这题怎么解?X-Y=4,2X+Y=20,X=?Y=?3X+2Y=14,2X-3Y=5,X=?Y=?
2x-y=8 3x+2y=5与3x+2y=1 3x-4y=-11用加减法怎么算?
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6