Question

When 3 times the number x is added to 9, the result is 3. What number results when 2 times x is added to 15?

Answer 1

The answer is `-7`

Explanation:

To solve the second part of this part the first part must be solved first to determine the value of `x`.

`3x + 9 = 3`

`3x = -12`

`x = -4`

Now we can substitute `-4` for `x` in the second expression in this problem.

`2x + 15 = (2*-4) + 15 = -8 + 15 = -7`