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МатематикаВопрос:
47. \(\frac{11}{12} : \frac{7}{12} : \frac{21}{55}\)
Ответ:
\(\frac{11}{12} : \frac{7}{12} : \frac{21}{55} = (\frac{11}{12} \cdot \frac{12}{7}) : \frac{21}{55} = \frac{11}{7} : \frac{21}{55} = \frac{11}{7} \cdot \frac{55}{21} = \frac{11 \cdot 55}{7 \cdot 21} = \frac{605}{147} = 4\frac{17}{147}\)
Ответ: \(4\frac{17}{147}\)
Похожие
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- 32. \(1\frac{3}{4} \cdot 1\frac{3}{7}\)
- 33. \(2\frac{2}{3} \cdot 3\frac{3}{4}\)
- 34. \(15\frac{7}{8} \cdot 1\)
- 35. \(0 \cdot 12\frac{3}{5}\)
- 36. \(2\frac{1}{2} \cdot 4\frac{2}{15}\)
- 37. \(0 \cdot 5,6\)
- 38. \(\frac{3}{12} \cdot \frac{3}{4}\)
- 39. \(\frac{4}{5} : \frac{8}{25}\)
- 40. \(8 : \frac{2}{7}\)
- 41. \(1 : \frac{3}{17}\)
- 42. \(0 : 5\frac{1}{19}\)
- 43. \(3\frac{7}{12} : 1\)
- 44. \(10 : 2\frac{1}{3}\)
- 45. \(2\frac{2}{3} : \frac{1}{31}\)
- 46. \(2\frac{2}{3} : \frac{6}{7} \cdot \frac{4}{7}\)
- 47. \(\frac{11}{12} : \frac{7}{12} : \frac{21}{55}\)
- 48. \(3\frac{1}{8} : 1\frac{5}{9} : \frac{5}{16}\)
- 49. \(\frac{15}{16} : \frac{3}{8} \cdot \frac{2}{5}\)
- 50. \(\frac{13}{14} : \frac{7}{26} \cdot \frac{3}{8}\)
- 51. \(-2\frac{1}{2} - 1\frac{2}{3}\)
- 52. \(-7\frac{5}{12} - (-1\frac{5}{6})\)
- 53. \(3\frac{1}{4} - (-5)\)
- 54. \(7\frac{8}{15} - 12\frac{17}{30}\)
- 55. \(-\frac{3}{8} \cdot (-\frac{1}{9})\)
- 56. \(-\frac{2}{7} \cdot (-\frac{8}{21})\)
- 57. \(\frac{3}{5} : (-\frac{9}{25})\)
- 58. \(-8 : \frac{4}{5}\)
- 59. \(-\frac{7}{8} \cdot \frac{2}{14}\)
- 60. \(12 \cdot (-\frac{1}{6})\)
- 61. \((\frac{5}{12} + \frac{3}{8}) \cdot \frac{6}{19}\)
- 62. \(\frac{6}{7} \cdot (\frac{11}{18} - \frac{5}{12})\)
- 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. \((3\frac{1}{6} - 2\frac{7}{15})\)
