Question

Fifteen more than twice the hours Carla worked last week is the same as three times the hours she worked this week decreased by 15. She worked the same number of hours each week. How many hours did she work each week?

Answer 1

2h + 15 = 3h - 15
2h - 3h = -15 - 15
-h = -30
h = 30 <== she worked 30 hrs