let's firstly convert the mixed fractions to improper fractions.
[tex]\bf \stackrel{mixed}{2\frac{3}{5}}\implies \cfrac{2\cdot 5+3}{5}\implies \stackrel{improper}{\cfrac{13}{5}} \\\\[-0.35em] ~\dotfill\\\\ 4-\cfrac{13}{5}\implies \cfrac{4}{1}-\cfrac{13}{5}\implies \stackrel{\textit{LCD of 5}}{\cfrac{(5)4-(1)13}{5}}\implies \cfrac{20-13}{5}\implies \cfrac{7}{5}\implies 1\frac{2}{5}[/tex]
