How many hours do Max and Sasha exercise per week? Max and Sasha exercise a total of 20 hours each
week. Max exercises 15 hours less than 4 times
the number of hours Sasha exercises. The system
x+y= 20
of equations
x - 4y = --15
represents this
situation, where x represents the number of hours
Max exercises and y represents the number of
hours Sasha exercises. How many hours do Max
and Sasha exercise per week?