Respuesta :
Answer:
3a-27
Step-by-step explanation:
Distribute the 3
3 x a is 3a
3 x 9 is 27
3a - 27
distribute the 3 to everything in the parenthesis
3 (a) = 3a
3 (-9) = -27
distribute the 3 to everything in the parenthesis
3 (a) = 3a
3 (-9) = -27