Question

-20 целых 4/5 : (4 целых 7/10 - 78,52 :5,2)

Answer 1

$- 20 \frac{4}{5} \div (4 \ \frac{7}{10} - 78.52 \div 5.2) = - \frac{104}{5} \div ( \frac{47}{10} - 15.1) = - \frac{104}{5} \div ( \frac{47}{10} \times \frac{151}{10} ) = - \frac{104}{5} \div ( - \frac{52}{5} ) = \frac{104}{5} \times \frac{5}{52} = 2$