1.(1/3-5/8)*(-6/7)
2.(-5/12-7/30):13/15
3.(-3/4-1/6):(-1целая3/8)
4.(1/4-5/18)*36
/-это дробь

1. \( \left(\frac{1}{3} - \frac{5}{8}\right) \cdot \left(-\frac{6}{7}\right) = \left(\frac{8}{24} - \frac{15}{24}\right) \cdot \left(-\frac{6}{7}\right) = \left(-\frac{7}{24}\right) \cdot \left(-\frac{6}{7}\right) = \frac{7 \cdot 6}{24 \cdot 7} = \frac{6}{24} = \frac{1}{4} \)

2. \( \left(-\frac{5}{12} - \frac{7}{30}\right) : \frac{13}{15} = \left(-\frac{25}{60} - \frac{14}{60}\right) : \frac{13}{15} = \left(-\frac{39}{60}\right) \cdot \frac{15}{13} = -\frac{13}{20} \cdot \frac{15}{13} = -\frac{15}{20} = -\frac{3}{4} \)

3. \( \left(-\frac{3}{4} - \frac{1}{6}\right) : \left(-1\frac{3}{8}\right) = \left(-\frac{9}{12} - \frac{2}{12}\right) : \left(-\frac{11}{8}\right) = \left(-\frac{11}{12}\right) \cdot \left(-\frac{8}{11}\right) = \frac{8}{12} = \frac{2}{3} \)

4. \( \left(\frac{1}{4} - \frac{5}{18}\right) \cdot 36 = \left(\frac{9}{36} - \frac{10}{36}\right) \cdot 36 = \left(-\frac{1}{36}\right) \cdot 36 = -1 \)

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