Simplify: 12q + 11 + 9q + 9.
Note
Group like parts: variable terms 12q+9q = 21q, and constants 11+9 = 20. So the simplified expression is 21q + 20.
Simplify: 12q + 11 + 9q + 9.
Group like parts: variable terms 12q+9q = 21q, and constants 11+9 = 20. So the simplified expression is 21q + 20.