# How do you solve 15+ r = 71?

Sep 20, 2016

$r = 56$

#### Explanation:

First, what you want to do is get the numbers and variable
(the letter $r$) on opposite sides of the equation.

Subtract 15 from both sides of the equation to get $r$ by itself like this:

$15 + r = 71$
$- 15$ color(aaaaaaaaaaaaaaaa) $- 15$

On the left side of the equation you are just left with $r$ because $15 - 15 = 0$, and on the right side you end up with 56 because $71 - 15 = 56$.

Therefore,
$r = 56$