# How do you simplify -1+ 10( 7a + 2) - 4a?

Jul 21, 2017

$66 a + 19$

#### Explanation:

Parentheses
Exponents
Multiplication
Division
Subtraction

$- 1 + 10 \left(7 a + 2\right) - 4 a$

First things first, we need to get rid of those parentheses, using distributive property

$- 1 + 70 a + 20 - 4 a$

Now we need to combine like-terms

$\textcolor{b l u e}{- 1} + \textcolor{red}{70 a} + \textcolor{b l u e}{20} + \textcolor{red}{- 4 a}$

$19 + 66 a$

$66 a + 19$