15-75x=13-50x

Question

I combine like terms first 75x-50x?

Answer 1

doesn't really matter

15-75x = 13-50x
2-75x = -50x
2 = 25x
x = 2/25

15-75x = 13-50x
15 = 13+25x
2 = 25x
x = 2/25

Answer 2

Thank you