Question

Expression vs Equations

Answer 1

So, X=8 right?
4x+8
Now, if we replace x with 8, we get 4(8) + 8. Now, the first think you do is multiply. So, 4(8) = 32. We now have 32+8, since we fixed the left part. Now, all you have to do is add 32+8, and you get 40.
Hope this helps!

Answer 2

20

Explanation:

An expression dose NOT have an = sign

An equation dose have an = sign

In this case, the expression 4x+8, replace the x with 3, since x=3

4x + 8

4 x 3 + 8 ( don't forget PEMDAS )

12 + 8

20