Tính giá trị

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a) \(-\frac{5}{11} + \frac{4}{13} - \frac{3}{17} + \frac{-6}{11} + \frac{9}{13}\)

d) \(\frac{11}{24} - \left( -\frac{5}{41} + \frac{-13}{24} \right) + 0,5 - \frac{36}{41}\)

f) \(\frac{3}{7} \cdot 19 \cdot \frac{1}{3} - \frac{3}{7} \cdot 33 \cdot \frac{1}{3}\)