SOLUTION: Im really confused on this problem (90-x)-x=180

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Question 496904: Im really confused on this problem (90-x)-x=180
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
(90-x)-x=180
90-x-x=180
90 - 2x = 180
-2x = 90
x = -45