Question

If you were to add 5 to my number and then divide by 4, you would get 7

Answer 1

Let's make an equation. T will be the number.
(T+5)/4=7
Let's multiply both sides by 4 to get T by itself.
T+5=28
Subtract 5 from both sides.
T=23
Your number is 23.

Answer 2

-3.25, because if you work backwards and do the math you’d divide 7 and 4 which equals 1.75 then subtract that by 5