Question

If RS = 5x + 2, ST = 7x − 12, and RT = 11x + 6, what is ST?

Answer 1

ST = 100

Explanation:

RS + ST = RT

(5x +2) + (7x -12) = 11x + 6

5x + 7x - 11x = 6 - 2 + 12

x = 16

ST = 7x - 12 = 7*16 - 12 = 112 - 12

ST = 100