Question

I think of a number add 1 then double the results help for my mate

Answer 1

let’s call the number x, this would be your equation: (x + 1) * 2

so if the number you are thinking of is 10, for example, the solution would look like this:

(x + 1) * 2
(10 + 1) * 2
11 * 2
=5.5

Answer 2

18 what is this for exactly..?