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4n-9.5=1/2(n+9)
We move all terms to the left:
4n-9.5-(1/2(n+9))=0
Domain of the equation: 2(n+9))!=0We multiply all the terms by the denominator
n∈R
4n*2(n+9))-(1-(9.5)*2(n+9))=0
Wy multiply elements
8n^2(n-(9.5)*2(n+9))=0
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