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12x-4=4(3x+9)
We move all terms to the left:
12x-4-(4(3x+9))=0
We calculate terms in parentheses: -(4(3x+9)), so:We get rid of parentheses
4(3x+9)
We multiply parentheses
12x+36
Back to the equation:
-(12x+36)
12x-12x-36-4=0
We add all the numbers together, and all the variables
-40!=0
There is no solution for this equation
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