# How do you solve 4+ ( 9+ n ) = 20?

May 20, 2018

$n = 7$

#### Explanation:

$4 + \left(9 + n\right) = 20$

Because there's nothing to distribute, combine like terms:

$4 + 9 = 13$

$13 + n = 20$

Subtract 13 from both sides:

$20 - 13 = 7$

$n = 7$