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13x-7=12(x-1)+x+15
We move all terms to the left:
13x-7-(12(x-1)+x+15)=0
We calculate terms in parentheses: -(12(x-1)+x+15), so:We get rid of parentheses
12(x-1)+x+15
We add all the numbers together, and all the variables
x+12(x-1)+15
We multiply parentheses
x+12x-12+15
We add all the numbers together, and all the variables
13x+3
Back to the equation:
-(13x+3)
13x-13x-3-7=0
We add all the numbers together, and all the variables
-10!=0
There is no solution for this equation
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