63. Упростите выражение: 1) 5/14 * x - 9/28 * x + 11/42 * x; 2) 8 13/18 * m - 4 7/12 * m + 5 5/6 * m.

1) \[\frac{5}{14}x - \frac{9}{28}x + \frac{11}{42}x = \frac{30}{84}x - \frac{27}{84}x + \frac{22}{84}x = \frac{30 - 27 + 22}{84}x = \frac{25}{84}x\] 2) \[8\frac{13}{18}m - 4\frac{7}{12}m + 5\frac{5}{6}m = 8\frac{26}{36}m - 4\frac{21}{36}m + 5\frac{30}{36}m = (8 - 4 + 5)m + \frac{26 - 21 + 30}{36}m = 9m + \frac{35}{36}m = 9\frac{35}{36}m\] Ответ: 1) 25/84 x; 2) 9 35/36 m