Question

ПОМОЖІТЬ БУДЬ ЛАСКА ДАЮ 20 БАЛІВ​

Answer 1

$1) \: = \frac{9}{4} \div (10 - \frac{85}{12} \times \frac{6}{5} ) = \frac{9}{4} \div (10 - \frac{17}{2} ) = \frac{9}{4} \div \frac{3}{2} = \frac{9}{4} \times \frac{2}{3} = \frac{18}{12} = \frac{3}{2} = 1 \frac{1}{2} \\ 2) \: = \frac{21}{8} \div (5 - \frac{49}{22} \times \frac{11}{7} ) = \frac{21}{8} \div (5 - \frac{7}{2} ) = \frac{21}{8} \div \frac{3}{2} = \frac{21}{8} \times \frac{2}{3} = \frac{42}{24} = \frac{7}{4} = 1 \frac{3}{4}$