Question

If a number is added to twice the number, the result is -21, what is the number?

Answer 1

-7

Explanation:

you are basically multiplying one number by three

so divide -21 by three and you get -7

Answer 2

Answer: -10.5

Explanation:

-21 ÷ 2 = -10.5

↑

divided by two because it was added twice