# How do you add or subtract rational expressions with the same denominator?

##### 1 Answer
Oct 26, 2014

You can keep the same denominator and add or subtract the numerators.

$\frac{a}{c} + \frac{b}{c} = \frac{a + b}{c}$ and $\frac{a}{c} - \frac{b}{c} = \frac{a - b}{c}$

I hope that this was helpful.