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4x + 5 + 3x − 12 =

 Mar 14, 2016
 #1
avatar+5265 
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7x-7.

 

PROOF.

 

4x + 5 + 3x − 12 =

 

Combine like terms.

 

4x + 5 + 3x − 12 = 7x-7

 Mar 14, 2016
 #2
avatar+8262 
0

4x+5+3x-12 = 7*x-7

 Mar 14, 2016

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