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NotSoSmart  Sep 1, 2017
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 #1
avatar+78638 
+2

5a + 5b       a  = -6     b = -5

 

5(-6) + 5(-5)  =

 

-30 - 25  =

 

-55

 

 

 

 

-3 (-4y + 3) + 7y         distribute the  -3   over the terms in the parentheses

 

12y - 9 + 7y              combine like terms

 

19y - 9

 

 

 

cool cool cool

CPhill  Sep 1, 2017

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