Решите уравнение: 1) (x + 5/12) - 9/20 = 11/15;

1) $\left(x + \frac{5}{12}\right) - \frac{9}{20} = \frac{11}{15}$ $x + \frac{5}{12} = \frac{11}{15} + \frac{9}{20}$ $x + \frac{5}{12} = \frac{44}{60} + \frac{27}{60}$ $x + \frac{5}{12} = \frac{71}{60}$ $x = \frac{71}{60} - \frac{25}{60}$ $x = \frac{46}{60} = \frac{23}{30}$ 2) $\left(x - \frac{11}{30}\right) - \frac{16}{45} = \frac{2}{9}$ $x - \frac{11}{30} = \frac{2}{9} + \frac{16}{45}$ $x - \frac{11}{30} = \frac{10}{45} + \frac{16}{45}$ $x - \frac{11}{30} = \frac{26}{45}$ $x = \frac{26}{45} + \frac{11}{30}$ $x = \frac{52}{90} + \frac{33}{90}$ $x = \frac{85}{90} = \frac{17}{18}$ 3) $\left(x - \frac{7}{15}\right) + \frac{5}{8} = \frac{17}{24}$ $x - \frac{7}{15} = \frac{17}{24} - \frac{5}{8}$ $x - \frac{7}{15} = \frac{17}{24} - \frac{15}{24}$ $x - \frac{7}{15} = \frac{2}{24}$ $x - \frac{7}{15} = \frac{1}{12}$ $x = \frac{1}{12} + \frac{7}{15}$ $x = \frac{5}{60} + \frac{28}{60}$ $x = \frac{33}{60} = \frac{11}{20}$