6 students share 5 small pizza needs to be share equally

5 pizza / 6 student = 'Z' pizza / 1 student

Cross-multiply the proportion:

5 pizza-student = 6 Z pizza-student

Divide each side of the equation by 6 pizza-student:

5/6 = Z

Each student gets 5/6 of 1 pizza.

It's not so complicated. Cut each pizza into 6 slices,

and each student gets 5 slices.

That's the same as (83 and 1/3) percent of a pizza.