Question

помогите пожалуйста, решить дробь ​

Answer 1

Пошаговое объяснение:

$( \frac{3}{4} {)}^{2} = \frac{9}{16}$

$0.8 \times 3 \frac{1}{8} = \frac{8}{10} \times 3 \frac{1}{8} = \frac{4 \times 2}{5 \times 2} \times 3 \frac{1}{8} = \frac{4}{5} \times 3 \frac{1}{8} = \frac{4}{5} \times \frac{1 + 3 \times 8}{8} = \frac{4}{5} \times \frac{25}{8} = \frac{4 \times 25}{5 \times 8} = \frac{100}{40} = \frac{5 \times 20}{2 \times 20} = \frac{5}{2} = \frac{2 \times 2 + 1}{2} = 2 \frac{1}{2}$

$\frac{9}{16} + 2 \frac{1}{2} = 2 + \frac{9}{16} + \frac{1}{2} = 2 + \frac{9 \times 1}{16 \times 1} + \frac{1 \times 8}{2 \times 8} = 2 + \frac{9}{16} + \frac{8}{16} = 2 + \frac{9 + 8}{16} = 2 + \frac{17}{16} = 2 + \frac{1 \times 16 + 1}{16} = 3 \frac{1}{16}$