Question

The lengths of the three sides of a triangle are x + 15 , 2x + 15 and x + 12 (where x cannot equal zero). What is the perimeter of the triangle? use the drop-down menu to complete the answer.

Answer 1

4x + 42

Explanation:

`\text{Perimeter}=(x+15)+(2x+15)+(x+12)=4x+42`