Rút gọn \(-\frac{2}{5} - \left(-\frac{3}{4}\right) - \left(-\frac{3}{4} + \frac{3}{5}\right)\)

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a) \(-\frac{2}{5} - \left(-\frac{3}{4}\right) - \left(-\frac{3}{4} + \frac{3}{5}\right)\)

d) \(\left(-\frac{1}{2}\right)^2 - \frac{5}{8} \cdot (0.5)^3 - \frac{5}{3} - \left(-6\right)\)