63. Упростите выражение: 1) \(\frac{5}{14}\)x - \(\frac{9}{28}\)x + \(\frac{11}{42}\)x 2) 8 \(\frac{13}{18}\)m - 4 \(\frac{7}{12}\)m + 5 \(\frac{5}{6}\)m

Решение:
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 = \(\frac{157}{18}\)m - \(\frac{55}{12}\)m + \(\frac{35}{6}\)m = \(\frac{314}{36}\)m - \(\frac{165}{36}\)m + \(\frac{210}{36}\)m = \(\frac{314 - 165 + 210}{36}\)m = \(\frac{359}{36}\)m = 9 \(\frac{35}{36}\)m

Ответ:
1) \(\frac{25}{84}\)x
2) 9 \(\frac{35}{36}\)m