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МатематикаВопрос:
56. \(-\frac{2}{7} \cdot (-\frac{8}{21})\)
Ответ:
\(-\frac{2}{7} \cdot (-\frac{8}{21}) = \frac{2}{7} \cdot \frac{8}{21} = \frac{2 \cdot 8}{7 \cdot 21} = \frac{16}{147}\)
Ответ: \(\frac{16}{147}\)
Похожие
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- 51. \(-2\frac{1}{2} - 1\frac{2}{3}\)
- 52. \(-7\frac{5}{12} - (-1\frac{5}{6})\)
- 53. \(3\frac{1}{4} - (-5)\)
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- 55. \(-\frac{3}{8} \cdot (-\frac{1}{9})\)
- 56. \(-\frac{2}{7} \cdot (-\frac{8}{21})\)
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- 63. \(2\frac{2}{3} \cdot \frac{9}{16} - \frac{7}{24} : \frac{2}{7}\)
- 64. \((3\frac{1}{2} - 2\frac{3}{4}) \cdot (1\frac{1}{6} - \frac{1}{12})\)
- 65. \(8 - \frac{3}{5} \cdot \frac{15}{27}\)
- 67. \((3\frac{1}{6} - 2\frac{7}{15})\)
