How do you solve 15+ r = 71?

1 Answer
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