Question

A triangle has a perimeter of 51 cm. If the three sides of the triangle are n, 4n-4, and 4n-8, what is the length of each side?

Answer 1

see below

Explanation:

The three sides add to 51

n + 4n-4 + 4n-8 = 51

9n -12 = 51

9n = 63

n = 7 4n-4 = 24 4n-8 = 20