[tex]2\dfrac{4}{5}=\dfrac{2\cdot5+4}{5}=\dfrac{10+4}{5}=\dfrac{14}{5}\\\\------------------------\\\\2\dfrac{4}{5}=2+\dfrac{4}{5}=\dfrac{10}{5}+\dfrac{4}{5}=\dfrac{10+4}{5}=\dfrac{14}{5}[/tex]
