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