On the third step it adds 8 on both sides. You are suppose to subtract 8 on both sides.
I think it is 1/3 but I am not sure. Sorry if wrong.
The temperature would be -10 degrees
17X-7Y. You add or subtract the same variables, in this case you only have two x's and one y. So you add them, because you have a addition sign. 13x+4x and you leave the Y alone, because there is not another Y variable.
Answer:
{-1, -2, -3, -4}
Step-by-step explanation:
The domain is the set of all x-values.