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
