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7(x-4)=7x-12
We move all terms to the left:
7(x-4)-(7x-12)=0
We multiply parentheses
7x-(7x-12)-28=0
We get rid of parentheses
7x-7x+12-28=0
We add all the numbers together, and all the variables
-16!=0
There is no solution for this equation
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