5 / 6 - (3 / 4-1 / 2) 2 / 5 + 2 / 3-2 / 5 a simple method requires a simple procedure What can be used is easy to use

5 / 6 - (3 / 4-1 / 2) 2 / 5 + 2 / 3-2 / 5 a simple method requires a simple procedure What can be used is easy to use

Five sixths -- (three fourths -- one half) = 1 / 2 + 1 / 3 -- (1 / 2 + 1 / 4 -- 1 / 2)
=2/4+1/3--1/4
=1/4+1/3
=7/12.
Two fifths + two thirds - two fifths = 2 / 3