Question 1029034
First, solve for the common denominator.

{{{5/6}}}, {{{7/9}}}, and {{{2/3}}} have a common denominator is 18.

{{{5/6}}} = {{{(5x3)/(6x3)}}} = {{{15/18}}}

{{{7/9}}} = {{{(7x2)/(9x2)}}} = {{{14/18}}}

{{{2/3}}} = {{{(2x6)/(3x6)}}} = {{{12/18}}}

Second, compare their numerator.

{{{15/18}}} > {{{14/18}}} > {{{12/18}}}

As the result, we have 

{{{15/18}}}  = {{{5/6}}} is the largest.