Question

What is the perimeter of a triangle with the given side lengths?

Answer 1

To find the perimeter of a triangle, you add all the sides.
(2x +1) + (3x+2) + (x+3)
next find all the common variables
2x, 3x, and x
add them together to get 
6x
Add 1,2, and 3
6
so your answer is 6x +6
Hope this helps! :)