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OpenStudy (anonymous):
Simplify the following expression. 2a+3-9b-a-7
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OpenStudy (anonymous):
(2a-a)-9b+(3-7)
OpenStudy (anonymous):
combine like terms... 2a - a = a -9b is all by itself -7 + 3 = - 4 so now you have : a - 9b - 4
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