A 5 foot wide painting should be centered on a 13 foot wide wall. How many feet (x) should be on each side of the painting?

4 feet

Step-by-step explanation:

First we subtract 5 from 13 to find the negative space.

13 - 5 = 8

8 Feet will not be covered by the painting. Let's divide this by two to find the length on each side.

8 : 2 = 4.

4 Feet will be on each side of the painting. So, x = 4.

The lengths would look like this;

4 + 5 + 4