Question

ОЧЕНЬ СРОЧНО 10 ДАЮ БАЛЛОВ!!!!!!!! ​

Answer 1

Ответ:

а) $10 - 4\frac{5}{12} = 6 - \frac{5}{12} = 5 + \frac{12}{12} + \frac{5}{12} = 5 + \frac{7}{12} = 5\frac{7}{12}$

б) $2\frac{5}{6} - \frac{1}{3} = 2\frac{5}{6} - \frac{1 * 2}{3 * 2} = 2 + \frac{5}{6} - \frac{2}{6} = 2 + \frac{3}{6} = 2\frac{3}{6}$

в) $6\frac{1}{5} - 2 = \frac{1}{5} + 6 - 2 = \frac{1}{5} + 4 = 4\frac{1}{5}$

г) $3\frac{2}{7} - 2\frac{4}{7} = (2 + \frac{9}{7}) - (2 + \frac{4}{7}) = \frac{9}{7} - \frac{4}{7} = \frac{5}{7}$

$3 + \frac{1}{2} - \frac{4}{5} = 3 + \frac{1 * 5}{2 * 5} - \frac{4 * 2}{5 * 2} = 3 + \frac{5}{10} - \frac{8}{10} = 2 + \frac{15}{10} - \frac{8}{10} = 2 + \frac{7}{10} = 2\frac{7}{10}$