Michael J. answered 10/18/15
Tutor
5
(5)
Effective High School STEM Tutor & CUNY Math Peer Leader
So far your setup is correct and you have the right equation. Just solve for x and substitute that value of x into each person's amount.
2(x - 6) + x - 6 + x = 54
2x - 12 + x - 6 + x = 54
4x - 18 = 54
I have simplified the equation for you. I leave it up to you to solve for x.