Question

Three times a certain number is 21. What is the number?

Answer 1

The answer is 7

Explanation:

an easier way to think of it is 21 divided by 3, which again, is 7.

Hope That Helps!

Answer 2

7

Explanation:

Let x be the unknown number

times is multiply and is means equals

3x = 21

Divide each side by 3

3x/3 = 21/3

x = 7