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13-9x=-9(x-1)
We move all terms to the left:
13-9x-(-9(x-1))=0
We calculate terms in parentheses: -(-9(x-1)), so:We get rid of parentheses
-9(x-1)
We multiply parentheses
-9x+9
Back to the equation:
-(-9x+9)
-9x+9x-9+13=0
We add all the numbers together, and all the variables
4!=0
There is no solution for this equation
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