Adding and sub fractions

**Itsbaxagain** · March 7th 2008, 06:43 AM

$\frac{s}{2s-6}+\frac{1}{4}-\frac{3s}{4s-12}$
Okay i know that LCD is 4(s-3) but i can't see how i get the answer of $\frac{-3}{4(s-3)}$ I cannot see how I get -3 Please help me.

**earboth** · March 7th 2008, 06:53 AM

Originally Posted by Itsbaxagain

$\frac{s}{2s-6}+\frac{1}{4}-\frac{3s}{4s-12}$
Okay i know that LCD is 4(s-3) but i can't see how i get the answer of $\frac{-3}{4(s-3)}$ I cannot see how I get -3 Please help me.

$\frac{s}{2s-6}+\frac{1}{4}-\frac{3s}{4s-12} =$

$\frac{s}{2(s-3)}+\frac{1}{4}-\frac{3s}{4(s-3)} =$

$\frac{2s}{2 \cdot 2(s-3)}+\frac{1 \cdot (s-3)}{4(s-3)}-\frac{3s}{4(s-3)} = \frac{2s + s - 3 - 3s}{4(s-3)} =$

$\frac{-3}{4(s-3)}$

Thread: Adding and sub fractions

LinkBack

Thread Tools

Display

Adding and sub fractions

Similar Math Help Forum Discussions

Adding these Fractions?

Adding Fractions

Adding More than Two Fractions

adding fractions

Adding fractions

Search Tags