2/5(y-3)=1/3y-3/5（y-7）

y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1 解方程：3y^2-(2y+1)(y-1)=(y-5)(y+1) 解方程3y^2-(2y+1)(y-2)=(y-5)(y-1) 解方程：3y²-(2y+1)(y-2)=(y-5)(y+1) y-(y-1)/2=1-(2y-3)/5 y-y-1/2=3-y+2/5 y-1/y-2 - y-3/y-4=y-2/y-3 - y-4/y-5一共有四个分数哦~希望可以快一点~谢谢! 5y∧2-(y-2)(3y+1)-2(y+1)(y-5) 2y+5/3y-6-y/2=5y-4/2y-4 解3y+5/3y-6=1/2+5y-4/2y-4 4(2y+5)-3y=7(y-5)+4(2y+1) (x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5) （3y-1)(2y-3)+(6y-5)(y-4)=?xie （3y-1)(2y-3)+(6y+5)(y-4)=? 方程5y（2y-3）=（y+2）（y-2）-1