Question 620508
two-digit number. 
If you divide me by 3 or subtract 10 from me, the result will be the same.
 What number?
;
let x = the number
:
A simple equation
{{{x/3}}} = x - 10
multiply both sides by 3
x = 3(x - 10)
x = 3x - 30
30 = 3x - x
30 = 2x
x = 30/2
x = 15, you can check this in the original equation