化简:3(x+y)+5=10y+x
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化简:3(x+y)+5=10y+x
化简:3(x+y)+5=10y+x
化简:3(x+y)+5=10y+x
3(x+y)+5=10y+x
3x+3y+5=10y+x
2x+3y+5=10y
2x+5=7y
化简:3(x+y)+5=10y+x
(x+y)^6/(x+y)^4-(x-y)^5/(x-y)^3 化简 ..
1.5(x+y)+3(x-y)=27(x+y)-3(x-y)=-62.x-y/7 - x+y/10 =1/22(x-y)-5(x+y)=3所谓细节决定成败,
化简:2(x-y)2-3(y-x)+5(X-Y)2=3(x-y)
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1(用换元法解此方程组)
3:x=5:y,x比y少10,x=( ),y=( )
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
化简 求值 x-{-5x-[-y+(-x+3y)+x]},其中x=-1,y=-2;
化简:5(x-y)+2(x+y)-3(x-y)
化简(x+5y)(x+4y)-(x-5y)(x+5y)其中x=3y=﹣三分之一
化简 x / y(x+y) - y / x(x+y) =
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
5(x-y)³-3(x-y)²+7(x-y)-5(x-y)³+(x-y)²-5(x-y),其中,x-y=1/3.5(x-y)³-3(x-y)²+7(x-y)-5(x-y)³+(x-y)²-5(x-y),其中,x-y=1/3先化简,再求值;
化简 x-y/(y-x)^3=
先化简,再求值 [2/3x - 2/x+y(x+y/3x -x-y)]*x/x-y,其中5x+3y=0