Respuesta :
Answer:
9a + 27
Step-by-step explanation:
=> 3(a+3) + 6(a+3)
Expand the brackets
=> 3a+9 + 6a+18
Combining like terms
=> 3a+6a+9+18
=> 9a + 27
Answer:
9a + 27
Step-by-step explanation:
=> 3(a+3) + 6(a+3)
Expand the brackets
=> 3a+9 + 6a+18
Combining like terms
=> 3a+6a+9+18
=> 9a + 27