Ответ(ы) на вопрос:
Гость[latex]( \frac{2}{7} + \frac{5}{21} ): \frac{14}{7} [/latex]
[latex] \frac{2}{7} + \frac{5}{21} = \frac{2*3}{7*3} + \frac{5}{21} = \frac{6}{21} + \frac{5}{21} = \frac{11}{21} [/latex]
[latex] \frac{11}{21} : \frac{14}{7} = \frac{11}{21}* \frac{7}{14} = \frac{11}{3} * \frac{1}{14} = \frac{1*11}{3*14} = \frac{11}{42} [/latex]
[latex]( \frac{8}{11} + \frac{3}{22} ): \frac{5}{11} [/latex]
[latex] \frac{8}{11} + \frac{3}{22} = \frac{8*2}{11*2} + \frac{3}{22} = \frac{16}{22} + \frac{3}{22} = \frac{19}{22} [/latex]
[latex] \frac{19}{22} : \frac{5}{11} = \frac{19}{22} * \frac{11}{5} = \frac{19}{2} * \frac{1}{5} = \frac{19}{10} =1 \frac{9}{10} [/latex]
Не нашли ответ?
Похожие вопросы