Question

срочно пж подскажите​

Answer 1

Ответ:

$3 \frac{1}{8} - (4 \frac{5}{16} + 1 \frac{1}{4} ) = 3 \frac{1}{8} - ( \frac{69}{16} + \frac{5}{4} ) = \frac{25}{8} - ( \frac{69 + 20}{16} ) = \frac{25}{8} - \frac{89}{16} = \frac{50 - 89}{16} = - \frac{39}{16} = - 2 \frac{7}{16}$

$- 7 \frac{3}{5} - ( - 4 \frac{1}{15} - 5 \frac{2}{3} ) = - 7 \frac{3}{5} + 4 \frac{1}{15} + 5 \frac{2}{3} = - \frac{38}{5} + \frac{61}{15} + \frac{17}{3} = \frac{ - 114 + 61 + 85}{15} = \frac{32}{15} = 2 \frac{2}{15}$