Question

The sum of a number w and 9 is multiplied by -3 and the result is -15. What is the number ?

Answer 1

Let's represent the number w as a variable.

(w + 9) * -3 = -15

Now, let's solve for w:

-3w - 27 = -15

-3w = 12

w = -4

Therefore, the number is -4.