x = number of books about sports
x+23 - number of books about social studies
x + x + 23 + 57=122
2x + 80 = 122
2x = 42
x = 21
21 sports
44 social studies
57 science
Enrique M.
asked 11/02/17
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.