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 set up the equation based on the information given:

(-3)(w + 9) = -15

Now, let's simplify the equation:

-3w - 27 = -15

Next, add 27 to both sides to isolate -3w:

-3w = 12

Now, divide by -3 to solve for w:

w = -4

Therefore, the number is -4.