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17-3n=-3(n-7)
We move all terms to the left:
17-3n-(-3(n-7))=0
We calculate terms in parentheses: -(-3(n-7)), so:We get rid of parentheses
-3(n-7)
We multiply parentheses
-3n+21
Back to the equation:
-(-3n+21)
-3n+3n-21+17=0
We add all the numbers together, and all the variables
-4!=0
There is no solution for this equation
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