# How do you write the mixed expression 5a-(2a)/b as a rational expression?

Mar 21, 2018

$\frac{5 a b - 2 a}{b}$

#### Explanation:

$\text{we require "5a" to have a denominator } b$

$\text{multiply and divide "5a" by } b$

$\Rightarrow \frac{5 a b}{b} - \frac{2 a}{b}$

$= \frac{5 a b - 2 a}{b} \leftarrow \textcolor{b l u e}{\text{rational expression}}$