解方程:(1)y-1/2-2=y+2/5 (2) 2(x-1)-(x+2)=3(4-x) (3)-6(x+3)=24(两
(x+y)-(x+y)平方 因式分解 解方程 2x²=3x (3x-1)² - 4=0 5x-15x
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
解方程:3x+2y/4=2x+y/5=x-y+1/6要详细过程
先化简再求值(x-y)(x+y)-(x-2y) 的完全平方+x(3x-5y)-(x-y)(x-2y),其中x=1/2 y
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
解方程(3x+2y)/4=(2x+3y)/5=(x-1)/6
已知x=1/3,y=-1/2,求代数式x-(x+y)+(x+2y)-(x+3y)+(x+4y)-(x+5y)+...-(
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-x-1/2=2-x+2/3 y+6=y+2/2-y-5/3
解方程(3x+2y)/4=x+1/3y=3(x-2)+y
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
解方程x+y+(x+y/2)=15 3x+5y+4(x+y/2)=62