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----- Nội dung ảnh -----
7) \( 23 \frac{1}{4} 5 - 13 \frac{1}{4} 5 \)
9) \( \left( \frac{5}{4} \right) \frac{2022}{2023} + \left( \frac{3}{4} \right) \frac{2022}{2023} \)
11) \( \left( \frac{1}{3} - \frac{3}{10} \right) + \left( \frac{2}{3} - \frac{7}{10} \right) \)
8) \( \frac{9}{100} + \frac{23}{101} + \frac{9}{100} + \frac{81}{100} + \frac{4}{101} \)
10) \( \left( \frac{1}{4} - \frac{2}{5} \right) + \left( \frac{3}{8} - \frac{3}{8} \right) \)
12) \( \left( \frac{4}{15} + \frac{3}{5} \right) \cdot \frac{5}{6} + \left( \frac{11}{15} - \frac{8}{5} \right) \cdot \frac{5}{6} \)
----- Nội dung ảnh -----
7) \( 23 \frac{1}{4} 5 - 13 \frac{1}{4} 5 \)
9) \( \left( \frac{5}{4} \right) \frac{2022}{2023} + \left( \frac{3}{4} \right) \frac{2022}{2023} \)
11) \( \left( \frac{1}{3} - \frac{3}{10} \right) + \left( \frac{2}{3} - \frac{7}{10} \right) \)
8) \( \frac{9}{100} + \frac{23}{101} + \frac{9}{100} + \frac{81}{100} + \frac{4}{101} \)
10) \( \left( \frac{1}{4} - \frac{2}{5} \right) + \left( \frac{3}{8} - \frac{3}{8} \right) \)
12) \( \left( \frac{4}{15} + \frac{3}{5} \right) \cdot \frac{5}{6} + \left( \frac{11}{15} - \frac{8}{5} \right) \cdot \frac{5}{6} \)