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----- Nội dung ảnh -----
Ví dụ 5: Tính nhanh
a) \( A = \left( 4 + \frac{7}{5741} \right) \cdot - \frac{1}{3759} - \frac{4}{3741} \left( 1 + \frac{2}{5741} \right) + \frac{1}{3759} + \frac{1}{3759 \cdot 5741} \)
b) \( B = \left( 2 + \frac{1}{3150} \right) \cdot - \frac{3}{6547} - \frac{1}{1050} \left( 3 + \frac{6516}{6517} \right) + \frac{4}{1050} - \frac{6}{3150 \cdot 6517} \)
----- Nội dung ảnh -----
Ví dụ 5: Tính nhanh
a) \( A = \left( 4 + \frac{7}{5741} \right) \cdot - \frac{1}{3759} - \frac{4}{3741} \left( 1 + \frac{2}{5741} \right) + \frac{1}{3759} + \frac{1}{3759 \cdot 5741} \)
b) \( B = \left( 2 + \frac{1}{3150} \right) \cdot - \frac{3}{6547} - \frac{1}{1050} \left( 3 + \frac{6516}{6517} \right) + \frac{4}{1050} - \frac{6}{3150 \cdot 6517} \)