Answer:
28
Explanation:
Let the number be x.
When 12 is subtracted from three times a certain number...
3x -12
and the result is divided by 4...
(3x -12)÷4
the answer is 18.
(3x -12) ÷4= 18
Let's work backwards to find the number.
3x-12= 18 ×4 (×4 throughout)
3x -12= 72
3x= 72 +12 (+12 on both sides)
3x= 84
x= 84 ÷3
x= 28
Thus, the number is 28.