Question

a = 3, k = 12, z = 6, h = 4

Evaluate the algebraic expression z + 15.

Answer 1

well if you plug in 6 for z then the equation would be 6+15 which leaves you with an answer of 21. Hope this helped

6+15=21

Answer 2

First substitute the number into the expression.
This is now 6 + 15 (because z=6)
Now work out the answer.
6 + 15 = 21