Find the greatest common divisor of 63 and 42

Natasha spent 1 1/2 hours on the beach. she fell asleep for 3/4 of the time she was on the beach and then woke up with a terrible sunburn.how many hours was natasha asleep on the beach?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.