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3(4x-5)=12(x+1)
We move all terms to the left:
3(4x-5)-(12(x+1))=0
We multiply parentheses
12x-(12(x+1))-15=0
We calculate terms in parentheses: -(12(x+1)), so:We get rid of parentheses
12(x+1)
We multiply parentheses
12x+12
Back to the equation:
-(12x+12)
12x-12x-12-15=0
We add all the numbers together, and all the variables
-27!=0
There is no solution for this equation
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