Percent of change. What number increased by 40% equals 14? How do I solve this

Set up an equation, where n is the original number. Since there is a 40% increase, 40% of itself is added to itself to make 14:

n +.4n = 14

You can now combine the n and. 4n, since they're compatible terms. Keep in mind that n = 1n:

1.4n = 14

Divide each side by 1.4 to solve for n:

n = 10

The original number is 10.