#### Question

For any natural number n , the fraction \dfrac{21n+4}{14n+3} cannot be reduced

Question

For any natural number n , the fraction \dfrac{21n+4}{14n+3} cannot be reduced

\dfrac{21n+4}{14n+3}

= \dfrac{14n+3+7n+1}{14n+3}

=1+\dfrac{7n+1}{14n+1}