Question

A triangle has one side that measures 9 units, another side that measures x, and a third side that measures 2 units more than x. The perimeter is 29 units.

Which equation would we use to find the value of x?

Answer 1

9 + x + x + 2 = 29

Explanation:

all of the sides added together is 29

so

9 + x + x + 2 = 29

that is your equation