+0  
 
0
417
1
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7x-12
3x
Guest Feb 7, 2012
 #1
avatar+310 
+1

if 7x-12=3x then we can subtract 3x and add 12

4x=12 we can divide by 4

x=3

 

and thats the answer

Ehrlich  Mar 26, 2017

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