# -4+7(1-3n) ?

Feb 27, 2018

If you are looking to have this expression simplified see a process below:

#### Explanation:

First, expand the terms in parenthesis by multiplying each term within the parenthesis by the term outside the parenthesis:

$- 4 + \textcolor{red}{7} \left(1 - 3 n\right) \implies$

$- 4 + \left(\textcolor{red}{7} \times 1\right) - \left(\textcolor{red}{7} \times 3 n\right) \implies$

$- 4 + 7 - 21 n$

We can now combine the like terms, these are the constants in this problem:

$- \textcolor{b l u e}{4} + \textcolor{b l u e}{7} - 21 n \implies$

$3 - 21 n$

Feb 27, 2018

$= - 21 n + 3$

#### Explanation:

$- 4 + 7 \left(1 - 3 n\right)$

Distribute

$- 4 + \left(7\right) \left(1\right) + \left(7\right) \left(- 3 n\right)$

$= - 4 + 7 - 21 n$

$= - 21 n + 3$