Question

The length of the side of an equilateral triangle is represented by 2x - 1. If the perimeter of the triangle is 21 what is the value of x

Answer 1

Explanation:

3(2x-1)=21

2x-1=7

2x=8

x=4

Answer 2

4

Explanation:

All sides equal

3(2x - 1) = 21

2x - 1 = 7

2x = 8

x = 4