Заполните цепочку вычислений.
1)
2)
1) $\frac{2}{7} + \frac{1}{14} = \frac{2 * 2 + 1}{14} = \frac{4 + 1}{14} = \frac{5}{14}$
2) $\frac{5}{14} * \frac{7}{10} = \frac{5 * 7}{14 * 10} = \frac{1 * 1}{2 * 2} = \frac{1}{4}$
3) $\frac{1}{4} * \frac{1}{4} = \frac{1 * 1}{4 * 4} = \frac{1}{16}$
4) $\frac{1}{16} * 32 = \frac{1 * 32}{16} = \frac{2}{1} = 2$
5) $2 - 1\frac{5}{13} = 1\frac{13}{13} - 1\frac{5}{13} = \frac{8}{13}$
Ответ:
1) $\frac{11}{18} - \frac{1}{9} = \frac{11 - 1 * 2}{18} = \frac{11 - 2}{18} = \frac{9}{18} = \frac{1}{2}$
2) $\frac{1}{2} * 2\frac{2}{3} = \frac{1}{2} * \frac{8}{3} = \frac{1 * 8}{2 * 3} = \frac{1 * 4}{1 * 3} = \frac{4}{3} = 1\frac{1}{3}$
3) $1\frac{1}{3} * \frac{1}{2} = \frac{4}{3} * \frac{1}{2} = \frac{4 * 1}{3 * 2} = \frac{2 * 1}{3 * 1} = \frac{2}{3}$
4) $\frac{2}{3} + \frac{5}{6} = \frac{2 * 2 + 5}{6} = \frac{4 + 5}{6} = \frac{9}{6} = \frac{3}{2} = 1\frac{1}{2}$
5) $1\frac{1}{2} * 10 = \frac{3}{2} * 10 = \frac{3 * 10}{2} = \frac{3 * 5}{1} = 15$
Ответ:
Пожауйста, оцените решение