*a number*means an arbitrary variable. We can pick any letter a-z except for i and e.

Let's choose x.

5 times a number

5x

Sixteen subtracted from five times a number

5x - 16

the number plus 4:

x + 4

Equals means we set 5x - 16 equals to x + 4 for our algebraic expression:

**5x - 16 = x + 4**

If you have to solve for x, type this expression into our math solver and we get:

x =

**5**