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15x-13-12x=3(x-4)
We move all terms to the left:
15x-13-12x-(3(x-4))=0
We add all the numbers together, and all the variables
3x-(3(x-4))-13=0
We calculate terms in parentheses: -(3(x-4)), so:We get rid of parentheses
3(x-4)
We multiply parentheses
3x-12
Back to the equation:
-(3x-12)
3x-3x+12-13=0
We add all the numbers together, and all the variables
-1!=0
There is no solution for this equation
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