1/2(y+1)+1/3(y+2)+1/4(y+3)-3=0不需要解了,我看了答案,我只想大家帮我分析一下[1/2(y+1)-1]+[1/3(y+2)-1]+[1/4(y+3)-3]=0即1/2(y-1)+1/3(y-1)+1/4(y-1)=0 ——就是这步,我已经说了，答案都写出来了！还需要你们化简

y (3y^2+8y-3)-6y(3y+2y-1)+9y 通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9 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 4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3) 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) 5y∧2-(y-2)(3y+1)-2(y+1)(y-5) 2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1 解方程：3y²-(2y+1)(y-2)=(y-5)(y+1) 解分式方程（y+3)/(y^2+y)-1/(1-y)=4/y要过程 (y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3 Y(Y-1)-(y-2)*(y+3)=2 Y的解是多少? (y平方+2y)(y平方+2y+2)+1 方程y''=(1+y'*y')/2y的通解 y'=1+y^2 -1+y+20y^2