Equation 2-x = -17so you want x by its self so you try to get rid of the 2 by subtracting it from both sides2-2 - x = - 17- 2which gives you -x = - 17 + (-2) = -x = -19which is really (-1)x = - 19so to get rid of the negative one you divide both sides. -1/-1x = -19/-1which gives you x = 19so your answer is it drops 19 degrees