Question

im thinking of a number. if you add half of this number to a sixth of this number, you will get 12. what is the number?

Answer 1

Let's set the equation and the mysterious number to x:

x/2+2/6=12

Then, times both sides by 12:

6x+2x=144

8x=144

x=18

The number that you are thinking of is 18.