Peter and Blake had the same amount of money. After Peter spent $41 and Blake spent $51, Peter had 3 times as much money as Blake. How much money did each have at first?
x - 41 = 3(x - 51)
x - 41 = 3x - 153
-2x = -112
x = 56
What?
x - 41 / x - 51 = 3 / 1
3(x - 51) = x - 41
Peter and Blake had $56 each.