Sana eats $\frac{2}{3}$ of a Pizza, Mana eats $\frac{4}{5}$ of the Pizza and Bana eats $\frac{6}{7}$ of the Pizza. Who eats more?

Simplify the following.

$\frac{15}{36}+\frac{33}{36}+\frac{23}{36}$

Simplify the following.

$7\frac{5}{12}+8\frac{7}{12}+9\frac{11}{12}$

Simplify the following and express the answer as improper fraction.

$\frac{23}{24}+\frac{19}{24}+\frac{17}{24}$

Simplify the following.

$\frac{37}{15}-\frac{23}{15}$

Simplify the following and express the answer as mixed fraction.

$10\frac{4}{15}+9\frac{7}{15}+8\frac{8}{15}$