Question

Номер 5! Помогите пожалуйста!! По действиям. ​

Answer 1

1. $\frac{7}{9} - \frac{5}{6} * \frac{4}{15} = \frac{5}{9}$

1) $\frac{5}{6} * \frac{4}{15} = \frac{2}{9}$

2) $\frac{7}{9} - \frac{2}{9} = \frac{5}{9}$

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2. $(\frac{8}{7} - \frac{1}{14} + \frac{1}{42}) * \frac{12}{46} = \frac{2}{7}$

1) $\frac{8}{7} - \frac{1}{14} + \frac{1}{42} = \frac{48}{42} - \frac{3}{42} + \frac{1}{42} = \frac{46}{42}$

2) $\frac{46}{42} * \frac{12}{46} = \frac{6}{21} = \frac{2}{7}$

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3. 5,37 + 1,3 * 4,72 = 11,502

1) 1,3 * 4,72 = 6,132

2) 5,37 + 6,132 = 11,502

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4. 4,73 * 1,3 - 2,68 = 3,469

1) 4,73 * 1,3 = 6,149

2) 6,149 - 2,68 = 3,469

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5. $\frac{3}{10} - \frac{9}{25} : (4-1\frac{9}{10}) + \frac{4}{7} = \frac{49}{70}$

1) $3\frac{10}{10} - 1\frac{9}{10} = 2\frac{1}{10}$

2) $\frac{9}{25} : \frac{21}{10} = \frac{9}{25} * \frac{10}{21} = \frac{6}{35}$

3) $\frac{3}{10} - \frac{6}{35} = \frac{21}{70} - \frac{12}{70} = \frac{9}{70}$

4) $\frac{9}{70} + \frac{4}{7} = \frac{9}{70} + \frac{40}{70} = \frac{49}{70}$

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6. $\frac{4}{5} + \frac{4}{493} * (\frac{95}{12} + \frac{52}{9}) = \frac{41}{45}$

1) $\frac{95}{12} + \frac{52}{9} = \frac{285}{36} + \frac{208}{36} = \frac{493}{36}$

2) $\frac{4}{493} * \frac{493}{36} = \frac{1}{9}$

3) $\frac{4}{5} + \frac{1}{9} = \frac{36}{45} + \frac{5}{45} = \frac{41}{45}$

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Готово. И снова я не прочитал условие задания.