Simplify (7x) - (-2x).
5x
-5x
9x
-9x
(7x) - (- 2x) = 9x
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Asked 10/23/2015 10:08:51 AM
Updated 10/25/2015 3:50:54 PM
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Andrew. [10/25/2015 3:50:54 PM]
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