The sum of two numbers is 72. The greater number is 8 more than the smaller number. Which equation can be used to solve for the smaller number?

The answer would be 72=x + (x-8), where x is equal to the larger number.

This would be because the sum of 72 is equal to a number and 8 less than that number, which can be represented by x plus 8 less than x, or x + (x-8).