Question

(-1 3/8-2 5/12):5 5/12=

Answer 1

$(-1 frac{3}{8}-2 frac{5}{12}):5 frac{5}{12}=(-3- frac{3cdot3+5cdot2}{24}): frac{65}{12}=-3 frac{19}{24}cdot frac{12}{65}=\ =- frac{91}{24}cdot frac{12}{65}=-frac{7}{2}cdot frac{1}{5}=-frac{7}{10}=-0.7.$