[tex] \frac{8}{11} - ( - \frac{1}{3} ) = \\ [/tex]
[tex] \frac{8}{11} + \frac{1}{3} = \\ [/tex]
8 x 3 = 24
11 x 1 = 11
11 x 3 = 33
[tex] = \frac{24 + 11}{33} \\ [/tex]
[tex] = \frac{35}{33} \\ [/tex]
So, the number that belongs in the green box is 35.
