3n+1/4n-1-3/4=?

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3n+1/4n-1-3/4=?3n+1/4n-1-3/4=?3n+1/4n-1-3/4=?(3n+1)/(4n-1)-3/4=(12n+4-12+3)/4(4n-1)=7/(16n-4)

3n+1/4n-1-3/4=?
3n+1/4n-1-3/4=?

3n+1/4n-1-3/4=?
(3n+1)/(4n-1)-3/4 =(12n+4-12+3)/4(4n-1) =7/(16n-4)