# Thread: Guys can you help me solve this question?

1. ## Guys can you help me solve this question?

Uploaded with ImageShack.us

I need to simplify it,the answer is (y-a)/(y-1),please help thanks

2. ## Re: Guys can you help me solve this question?

Originally Posted by wintersnow

Uploaded with ImageShack.us
I need to simplify it,the answer is (y-a)/(y-1),please help thanks
I am not sure what the problem means. BUT

$\displaystyle \text{LCD}(y^2-1,~y-1,~y^2+y)=y(y-1)(y+1)~.$

3. ## Re: Guys can you help me solve this question?

What does that : between the two terms mean? At a guess I would think a "proportion" which is the same as a division.
In any case, the first thing you need to do is add the fraction $\displaystyle \frac{ay+ 1}{y^2- 1}+ \frac{a}{y- 1}+ \frac{a}{y^2+y}$

As Plato said, the least common denominator is y(y- 1)(y+ 1). Multiply numerator and denominator of the first fraction by y, of the second fraction by y(y+ 1), and of the third fraction by y- 1.

4. ## Re: Guys can you help me solve this question?

hey thanks for the help,I have solved the question.The colon sign means division