Explanation
Imagine a candy bar split into 5 equal sections. Break one piece off and you'll have 4 left over. The piece broken off is 1/5 of the entire thing. The remaining amount is 4/5 of the entire candy bar.
Or if you prefer, imagine a pizza with 5 slices. Eat one of them to be left with 4 slices leftover. This is another way to visualize 4/5.
Writing 4/5 is the same as writing [tex]\frac{4}{5}[/tex]
