1. Joshua is trying to find the measure of the angle indicated in bold (-5+12x). His work is shown below and it
contains a mistake. Explain the mistake and then show the correct solution.
Note: when explaining the mistake, make sure to indicate how the solution is wrong AND how it needs to be
corrected.
Joshua's solution
-5 + 12x + 10x + 9 = 180
22x + 4 = 180
22x = 176
X=8
-5 + 12(8) = -5 + 96 = 919
