Question

The sum of 5 fifteens and 3 fifteens

Answer 1

5 * 15 = 75

3 * 15 = 45

45 + 75 = 120

Explanation:

When you have a equation like that, you need to multiply. It is a faster way to solve the problem.

You had 15 five times.

15+15+15+15+15= 75 It equals the same thing because it is the same as 5 * 15

Same for the three fifteens.

15+15+15= 45.

The sum of the whole equation is 120 because you add 75 and 45.

Hope this helps, have a good day/night. Stay safe and healthy!

Answer 2

(5 x 15) + (3 x 15) = 120

Explanation:

5 x 15 = 75

3 x 15 = 45

75 + 45 = 120

Hope this helps :)