Question

Только 4,6,8
Надо расписать​

Answer 1

Пошаговое объяснение:

$4)(1 \frac{7}{10} + \frac{4}{5} ) \div 1 \frac{7}{8} = 1 \frac{7 + 8}{10} \div \frac{15}{8} = \frac{25}{10} \times \frac{8}{15} = \frac{20}{15} = 1 \frac{1}{3} \\ 6)1 \frac{9}{35} \div (1 \frac{1}{5} + \frac{2}{3} ) = \frac{44}{35} \div 1 \frac{13}{15} = \frac{44}{35} \times \frac{15}{28} = \frac{33}{49} \\ 8)(8 \frac{7}{12} - 2 \frac{5}{8} ) \div 2 \frac{1}{6} = (6 \frac{14 - 15}{24} ) \div \frac{13}{6} = 5 \frac{38 - 15}{24} \times \frac{6}{13} = 5 \frac{23}{24} \times \frac{6}{13} = \frac{143}{24} \times \frac{6}{13} = \frac{11}{4} = 2 \frac{3}{4}$