Simplify: 4n + 11 + 9n + 9.
Note
Group like parts: variable terms 4n+9n = 13n, and constants 11+9 = 20. So the simplified expression is 13n + 20.
Simplify: 4n + 11 + 9n + 9.
Group like parts: variable terms 4n+9n = 13n, and constants 11+9 = 20. So the simplified expression is 13n + 20.