SOLUTION: Fidn the sum of -5ab+7ab+(-9ab)+ab+(-2ab).
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Question 182703:  Fidn the sum of -5ab+7ab+(-9ab)+ab+(-2ab). 
Answer by Mathtut(3670)   (Show Source): You can put this solution on YOUR website!
 -5ab+7ab+(-9ab)+ab+(-2ab). these terms are all alike so just add the coefficients together to find the total of the ab term -5+7-9+1-2=-8
:
-8ab 
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