The difference between one-half of a number and one-sixth of the number is equal to ten more than one-eighth of that number.

Which equation could be used to find the number?

1/2n - 1/6 = 10 + 1/8n
1/2 - 1/6n = 10 + 1/8n
1/2n - 1/6n = 10 + 1/8n