Выполните действия:
1) 19/24 + 5/12 - 17/36
2) 11/12 + 5/6 - 19/24
3) 13/15 - 3/10 + 7/30

1) \[\frac{19}{24}+\frac{5}{12}-\frac{17}{36}=\frac{57}{72}+\frac{30}{72}-\frac{34}{72}=\frac{53}{72}\]

2) \[\frac{11}{12}+\frac{5}{6}-\frac{19}{24}=\frac{22}{24}+\frac{20}{24}-\frac{19}{24}=\frac{23}{24}\]

3) \[\frac{13}{15}-\frac{3}{10}+\frac{7}{30}=\frac{26}{30}-\frac{9}{30}+\frac{7}{30}=\frac{24}{30}=\frac{4}{5}\]

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