Evolution the expression when a=-3 and x=3 5a-x

It's a good idea to get into the habit of using parentheses when substituting numbers in for variables.

Since a = - 3 and x = 3, 5a - x is 5 (-3) - (3).

5 (-3) is - 15 and we have (-15) - 3 which simplifies to - 18.

-18

Step-by-step explanation:

Step 1: Substitute - 3 for a and 3 for x

5a - x

5 (-3) - (3)

-15 - 3

-18

Answer: - 18