Вопрос:

39. Решите уравнение.

Фотография

Ответ ассистента

39. Решите уравнение: 1) $x + \frac{2}{7} = \frac{5}{14}$ $x = \frac{5}{14} - \frac{2}{7} = \frac{5}{14} - \frac{4}{14} = \frac{1}{14}$ 2) $x - \frac{1}{4} = \frac{6}{11}$ $x = \frac{6}{11} + \frac{1}{4} = \frac{24}{44} + \frac{11}{44} = \frac{35}{44}$ 3) $\frac{3}{8} + h = \frac{11}{18}$ $h = \frac{11}{18} - \frac{3}{8} = \frac{44}{72} - \frac{27}{72} = \frac{17}{72}$ 4) $\frac{4}{15} - y = \frac{7}{30}$ $y = \frac{4}{15} - \frac{7}{30} = \frac{8}{30} - \frac{7}{30} = \frac{1}{30}$ 5) $\frac{3}{8} + a = \frac{5}{6}$ $a = \frac{5}{6} - \frac{3}{8} = \frac{20}{24} - \frac{9}{24} = \frac{11}{24}$ 6) $\frac{7}{12} - y = \frac{3}{32}$ $y = \frac{7}{12} - \frac{3}{32} = \frac{56}{96} - \frac{9}{96} = \frac{47}{96}$ 7) $\frac{5}{13} + t = \frac{7}{10}$ $t = \frac{7}{10} - \frac{5}{13} = \frac{91}{130} - \frac{50}{130} = \frac{41}{130}$ 8) $\frac{2}{3} - b = \frac{1}{5}$ $b = \frac{2}{3} - \frac{1}{5} = \frac{10}{15} - \frac{3}{15} = \frac{7}{15}$ 9) $t - \frac{1}{6} = \frac{11}{42}$ $t = \frac{11}{42} + \frac{1}{6} = \frac{11}{42} + \frac{7}{42} = \frac{18}{42} = \frac{3}{7}$

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