Question

Help!!!!!!!! someone give me the correct answer to this question.
I will mark you brainliest for the correct answer.

This is a big test.

Please help!!!

Answer 1

Answer:

20

Steps:

x + (x+5) + (7x-5) = 180

x + x + 5 + 7x - 5 = 180

2x + 5 + 7x - 5 = 180

9x + 5 - 5 = 180

9x = 180

x = 180/9

x = 20