Question

Find the sum of 5, eight times a number, and five times the same number. Express the answer in simplified form.

Answer 1

13X + 5

Explanation:

Let "a number" be X

Sum of:

5 eight times a number 5 times the same number

5 + 8X + 5x

13X + 5

Answer 2

Numbers

Let's call the number 'n'. Then, 8 times the number is 8n.

5 times the same number means 5 times n => 5n

The sum means we add, so we get :

5 + 8n + 5n

Obviously, this can be simplified, until we get

5 + 13n