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How would I do the above?

 

Thanks

 Oct 28, 2017
 #1
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0

a - 4(a + b)            Distribute the  -4  to each term in the parenthesees.

 

=   a  -  4a  -  4b         Combine  a  and  -4a  to get  -3a  .

 

=  -3a - 4b

 Oct 28, 2017

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