Question

Write a simplified expression for the perimeter of the triangle.

Answer 1

Answer: 2x + 4

Explanation:

(x - 1) + (-x + 1) + (2x + 4)

Put like terms together

2x + x - x - 1 + 1 + 4

Combine like terms

2x + 0 + 0 + 4

2x + 4