Question

9 /16 * (1/4+5/12)-8/15:16/45=помогите

Answer 1

$\frac{9}{16} \times ( \frac{1}{4} + \frac{5}{12} ) - \frac{8}{15} \div \frac{16}{45}$

решаем по действиям :

$1) \frac{1}{4} + \frac{5}{12} = \frac{3}{12} + \frac{5}{12} = \frac{8}{12} = \frac{2}{3}$

$2) \frac{8}{15} \div \frac{16}{45} = \frac{8}{15} \times \frac{45}{6} = \frac{360}{240} = \frac{3}{2} = 1 \frac{1}{2}$

$3) \frac{9}{16} \times \frac{2}{3} = \frac{18}{48} = \frac{3}{8}$

$4) \frac{3}{8} - 1 \frac{1}{2} = \frac{3}{8} - \frac{3}{2} = \frac{3}{8} - \frac{12}{8} = - \frac{9}{8} = - 1 \frac{1}{8}$

Ответ :

$- 1 \frac{1}{8}$