Răspuns:
[tex]5 \frac{5}{6} - \frac{11}{4} = \frac{5 \times 6 + 5}{6} - \frac{11}{4} \\ \frac{35}{6} - \frac{11}{4} amplific \: cu \: 4 \: la \: prima \: fractie \: si \: cu \: 6 \: la \: a \: doua \: \\ \frac{35 \times 4}{24} - \frac{11 \times 6}{24} = \frac{140}{24} - \frac{66}{24} = \\ = \frac{140 - 66}{24} = \frac{74}{24} simplific \: prin \: 2 = > \frac{37}{12} \\ \\ [/tex]
Explicație pas cu pas:
[tex]7 \frac{7}{18} - 6 \frac{1}{12} = \frac{7 \times 18 + 7}{18} - \frac{6 \times 12 + 1}{12} = \\ = \frac{133}{18} - \frac{73}{12} \: amplific \: prin \: 4 \: la \: prima \: si \: la \: a \: doua \: cu \: 6 = \\ = \frac{532}{72} - \frac{438}{72} = \frac{94}{72} simplific \: prin \: 2 = \frac{47}{36} [/tex]
Succes!
