Tính nhanh (nếu được)
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Bài 1: Tính nhanh (nếu được)
1) \( \frac{2}{3} + \frac{1}{5} + \frac{10}{7} \)
2) \( 1 - \frac{4}{5} + \frac{3}{10} \)
3) \( \frac{51}{17} + \frac{-7}{15} + \frac{-8}{34} \)
4) \( -\frac{5}{7} + \frac{5}{8} + \frac{5}{7} \)
5) \( \frac{3}{15} + \frac{4}{6} - \frac{5}{9} \)
6) \( \left( \frac{4}{12} - \frac{3}{2} \right) \frac{10}{15} \)
7) \( A = -\frac{5}{8} \left( \frac{2}{3} + \frac{-7}{12} \right) \)
8) \( \frac{5}{6} + \frac{1}{6} - \frac{(12 - 5)}{3} \)
9) \( \frac{7}{19} + \frac{8}{11} + \frac{12}{19} \)
10) \( \frac{8}{10} + \frac{9}{12} + \frac{12}{14} \)
11) \( \frac{5}{15} - \frac{4}{9} + \frac{9}{36} \)
12) \( \frac{5}{7} + \frac{4}{9} \)
Bài 1: Tính nhanh (nếu được)
1) \( \frac{2}{3} + \frac{1}{5} + \frac{10}{7} \)
2) \( 1 - \frac{4}{5} + \frac{3}{10} \)
3) \( \frac{51}{17} + \frac{-7}{15} + \frac{-8}{34} \)
4) \( -\frac{5}{7} + \frac{5}{8} + \frac{5}{7} \)
5) \( \frac{3}{15} + \frac{4}{6} - \frac{5}{9} \)
6) \( \left( \frac{4}{12} - \frac{3}{2} \right) \frac{10}{15} \)
7) \( A = -\frac{5}{8} \left( \frac{2}{3} + \frac{-7}{12} \right) \)
8) \( \frac{5}{6} + \frac{1}{6} - \frac{(12 - 5)}{3} \)
9) \( \frac{7}{19} + \frac{8}{11} + \frac{12}{19} \)
10) \( \frac{8}{10} + \frac{9}{12} + \frac{12}{14} \)
11) \( \frac{5}{15} - \frac{4}{9} + \frac{9}{36} \)
12) \( \frac{5}{7} + \frac{4}{9} \)