Question

I thought of a number,double it,then decreased it by 17. Then I divided the results by 3 I got 15. What was my number

Answer 1

31.

Explanation:

We have the equation:

(2x - 17) / 3 = 15 where x is the number to be found.

Multiply both sides by 3:

2x - 17 = 45

2x = 45 + 17 = 62

x = 31.