解方程0.75x-3y=-1,-3/4x+6y=4
解方程:3x+2y/4=2x+y/5=x-y+1/6要详细过程
解方程:3分之2(x-y)-4分之x+y=-1,3(x+y)-6(x-y)=6
用代入法解方程2(x-y)/3-(x+y)/4=-1① 6(x+y)-4(2x-y)=16②
解方程x+y+(x+y/2)=15 3x+5y+4(x+y/2)=62
因式分解解方程 (4-x)(3x+6)=0 4y(y-1)=2y(y-1)
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
{4/(x+y)+6/(x-y)=3 {9/(x-y)-1/(x+y)=1
解方程{3x -y+z=4 2x+3y-z=12 x+y+z=6
解方程(3x+2y)/4=x+1/3y=3(x-2)+y
解方程一;{x+y-z=6,x-3y+2z=1,3x+2y-z=-7.②{3x+4z=7,2x+3y+z=9,5x-9y
解方程(3x+2y)/4=(2x+3y)/5=(x-1)/6
求方程x+2y-3x=4,3x-2y+x=6,3x+2y-5x=8的解