Eight times the sum of 11 and a number is 123. Which equation can be used to find the unknown number?

8(11 + n) = 123

To find the unknown number, we can set up an equation based on the given information.

Let's denote the unknown number as "x". The sum of 11 and the unknown number is 11 + x.

According to the problem, eight times the sum of 11 and the unknown number is equal to 123. So, we can write this relationship as:

8 * (11 + x) = 123

This equation can be used to find the value of the unknown number. By solving this equation, we can determine the value of "x".