Respuesta :

kemalabbas79

Answer:

a=5

Step-by-step explanation:

3a plus9plus16=30

a=5 answer 5
3(a+3)+6We multiply the first 3 with both a and 3 so we get
3a+9+6=30
3a+15=30
Then we take 15 to other side with a negative sign
3a=30-15
3a=15
Then we take 3 to other side as multiplication
a=5