Respuesta :

naturecross11
You do 3 times 5 which equals 15 so it becomes 3+15
chrysanthemum

To find what 3 + 3(a) simplifies to when a = 5, first substitute.

3 + 3a

3 + 3(5)

Follow the order of operations (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction) to properly simplify.

Multiply 3 and 5.

3 + 15

Add.

18

Answer:

18