Question

1 11/13÷(11/9+7/6×2 2/3)=

Answer 1

$\frac{111}{13} \div ( \frac{11}{9} + \frac{7}{6} \times \frac{22}{3} ) = \\ \frac{111}{13} \div ( \frac{11}{9} + \frac{7}{3} \times \frac{11}{3} ) = \\ \frac{111}{13} \div ( \frac{11}{9} + \frac{77}{9} ) = \\ \frac{111}{13} \div \frac{88}{9} = \\ \frac{111}{13} \times \frac{9}{8}$