The equation will be: 1/3x + 12 = x (one third of a number + 12 equals to the number) Solving the equation: subtract 1/3x from both sides: 12 = 2/3x divide by 2 6 = 1/3x multiply with 3 18 = x
Your number is 18, its one-third is 6, which is 12 less than the number itself.
