Question

when 8 is subtracted from a certain number and the result is multipled by 3 the answer is 21. what is the original number?

Answer 1

Answer:

15

Step-by-step explanation:

let the no. be x

(x-8)*3=21

x-8=7

x=7+8

x=15

Answer 2

Answer:

The original number is probably 15

Step-by-step explanation:

My reason:

I first need to find out what 3*X= 21. I divide 21/3 and find 7.

With 7 I can know find out what the original number is with addition.

8+7= ANSWER

Through these steps I find that the original number is 15