The sum of 1 / 4 of a number plus 12 is equal to 2 / 5 of it. Find the number (by solving the equation)

The sum of 1 / 4 of a number plus 12 is equal to 2 / 5 of it. Find the number (by solving the equation)

Let this number be X
X/4+12=2X/5
2X/5-X/4=12
3X/20=12
X=12*20/3
X=80
This number is 80