Question 1182721
I think of a number. (x)

 I multiply it by 5.

5x 

I then subtract 19.

5x-19 
Finally, I double the result.

(5x-19)*2

 The result is 22.

(5x-19)*2=22
5x-19 = 11 (dividing by 2)
5x =19+11
5x =30
x=15

15   the original number.