Предмет: Математика, автор: volchica19

Помогите пожалуйста.
1) надо найти НОК
2) ПОТОМ ДРОБИ УМНОЖИТЬ НА НОД

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Ответы

Автор ответа: NNNLLL54

1

Образец дан в задании.

$\frac{2}{5}:\frac{1}{3}=\frac{2\cdot 3}{5\cdot 1}=\frac{6}{5}=6:5\\\\\frac{4}{7}:\frac{1}{2}=\frac{4\cdot 2}{7\cdot 1}=\frac{8}{7}=8:7\\\\\frac{5}{6}:\frac{3}{8}=\frac{5\cdot 8}{6\cdot 3}=\frac{20}{9}=20:9\\\\3\frac{1}{9}:2\frac{1}{6}= \frac{28}{9}:\frac{13}{6}=\frac{28\cdot 6}{9\cdot 13}=\frac{56}{39}=56:39\\\\1\frac{5}{12}:\frac{2}{15}=\frac{17}{12}\cdot \frac{15}{2}=\frac{17\cdot 15}{12\cdot 2}=\frac{85}{8} =85:8\\\\\frac{1}{8}:1\frac{7}{12}=\frac{1}{8}:\frac{19}{12}=\frac{1\cdot 19}{8\cdot 12}=\frac{19}{96}=19:96$

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