337. Вычислите: 1) 31/58 − 16/58; 2) 19/25 + 4/25 − 22/25; 3) 1/6 + 7/15; 4) 5/14 − 1/4; 5) 3/4 − 5/12 + 5/9; 6) 2 3/8 + 4 5/12; 7) 3 5/6 − 1 7/12; 8) 9 2/15 − 6 3/5; 9) 5 7/18 − 4 11/12.

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\(\frac{31}{58}-\frac{16}{58}=\frac{15}{58}\).
\(\frac{19}{25}+\frac{4}{25}-\frac{22}{25}=\frac{1}{25}\).
Общий знаменатель 30: \(\frac{1}{6}+\frac{7}{15}=\frac{5}{30}+\frac{14}{30}=\frac{19}{30}\).
\(\frac{5}{14}-\frac{1}{4}=\frac{10}{28}-\frac{7}{28}=\frac{3}{28}\).
Общий знаменатель 36: \(\frac{3}{4}-\frac{5}{12}+\frac{5}{9}=\frac{27}{36}-\frac{15}{36}+\frac{20}{36}=\frac{32}{36}=\frac{8}{9}\).
\(2\frac{3}{8}+4\frac{5}{12}=6+\frac{9}{24}+\frac{10}{24}=6\frac{19}{24}\).
\(3\frac{5}{6}-1\frac{7}{12}=3\frac{10}{12}-1\frac{7}{12}=2\frac{3}{12}=2\frac{1}{4}\).
\(9\frac{2}{15}-6\frac{3}{5}=9\frac{2}{15}-6\frac{9}{15}=8\frac{17}{15}-6\frac{9}{15}=2\frac{8}{15}\).
\(5\frac{7}{18}-4\frac{11}{12}=5\frac{14}{36}-4\frac{33}{36}=4\frac{50}{36}-4\frac{33}{36}=\frac{17}{36}\).

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