5.355 Вычислите: 1) \( \frac{5}{13} + \frac{4}{13} + \frac{6}{13} \) 2) \( \frac{9}{25} - \frac{6}{25} + \frac{2}{25} \) 3) \( 5 \frac{2}{7} - 4 \frac{1}{7} + 3 \frac{4}{7} \) 4) \( 9 \frac{5}{14} + 1 \frac{3}{14} - 6 \frac{1}{14} \)

1) \( \frac{5}{13} + \frac{4}{13} + \frac{6}{13} = \frac{5+4+6}{13} = \frac{15}{13} = 1 \frac{2}{13} \) 2) \( \frac{9}{25} - \frac{6}{25} + \frac{2}{25} = \frac{9-6+2}{25} = \frac{5}{25} = \frac{1}{5} \) 3) \( 5 \frac{2}{7} - 4 \frac{1}{7} + 3 \frac{4}{7} = (5 - 4 + 3) + (\frac{2}{7} - \frac{1}{7} + \frac{4}{7}) = 4 + \frac{2-1+4}{7} = 4 + \frac{5}{7} = 4 \frac{5}{7} \) 4) \( 9 \frac{5}{14} + 1 \frac{3}{14} - 6 \frac{1}{14} = (9 + 1 - 6) + (\frac{5}{14} + \frac{3}{14} - \frac{1}{14}) = 4 + \frac{5+3-1}{14} = 4 + \frac{7}{14} = 4 + \frac{1}{2} = 4 \frac{1}{2} \)