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8k=4(2k+1)
We move all terms to the left:
8k-(4(2k+1))=0
We calculate terms in parentheses: -(4(2k+1)), so:We get rid of parentheses
4(2k+1)
We multiply parentheses
8k+4
Back to the equation:
-(8k+4)
8k-8k-4=0
We add all the numbers together, and all the variables
-4!=0
There is no solution for this equation
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