Thực hiện phép tính
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Bài 1. Thực hiện phép tính:
a) \( \frac{3}{5} + \frac{-1}{25} = \frac{7}{20} \)
b) \( \frac{2}{5} + \frac{1}{5} - \frac{3}{4} \)
c) \( \frac{5}{12} + \frac{4}{5} - \frac{3}{4} \)
d) \( \frac{1}{7} + \frac{6}{7} - \left( \frac{1}{2} - \frac{1}{3} \right) \)
e) \( \frac{1}{2} - \left( \frac{2}{3} \right)^9 \cdot \left( \frac{2}{3} \right)^7 + \frac{5}{6} \)
f) \( 25 \cdot \left(-\frac{1}{5}\right)^3 + \frac{1}{5} - 2 \cdot \left(-\frac{1}{2}\right)^2 - \frac{1}{2} \)
g) \( 3 \cdot \left(-\frac{2}{3}\right)^2 - 2 \cdot \frac{-2}{3} + 4 \cdot \left(-\frac{2}{3}\right)^0 \)
h) \( \left( 1 - \frac{12}{7} \right)^2 + 8 \cdot (0.5)^3 + (-1)^{2023} \)
i) \( 0.1 \cdot \sqrt{225} - \sqrt{\frac{1}{4}} \)
j) \( \left(-\frac{1}{2}\right)^2 - \sqrt{\frac{16}{25}} + \sqrt{81} - \left(-\frac{2}{3}\right)^2 - (-1)^{\frac{1}{2}} \sqrt{\frac{4}{9}} \)