Answer :
Combine like terms:
[tex]\frac{2}{5}m-\frac{4}{5}-\frac{3}{5}m[/tex]The like terms on the expression are:
[tex]\frac{2}{5}m\text{ and -}\frac{3}{5}m[/tex]Combining them we obtain:
[tex]\frac{2}{5}m\text{ -}\frac{3}{5}m=\frac{2-3}{5}m=\frac{-1}{5}m[/tex]Now, the modified equivalent expression will be:
[tex]-\frac{1}{5}m-\frac{4}{5}[/tex]