Tính hợp lý (nếu có thể)
----- Nội dung ảnh -----
Bài 12. Tính hợp lý (nếu có thể)
a) \( \frac{11}{8} \left[ \frac{-5}{11} + \frac{13}{5} - \frac{5}{13} + \frac{6}{33} \right] + \frac{-3}{4} \)
b) \( \frac{2}{9} \left[ \frac{-4}{45} \left( \frac{1}{5} \frac{2}{15} \right) + 1 \frac{2}{3} \right] = \frac{-5}{27} \)
c) \( \left( \frac{4}{5} + \frac{-9}{7} \right) \frac{2021}{2022} + \left( \frac{-5}{7} + \frac{-6}{5} \right) \frac{2021}{2022} \)
d) \( \frac{1}{29} + \frac{3}{26} + \frac{9}{238} \)
\( \frac{-3}{29} + \frac{13}{11} + \frac{3}{9} = \frac{119}{119} \)
Bài 12. Tính hợp lý (nếu có thể)
a) \( \frac{11}{8} \left[ \frac{-5}{11} + \frac{13}{5} - \frac{5}{13} + \frac{6}{33} \right] + \frac{-3}{4} \)
b) \( \frac{2}{9} \left[ \frac{-4}{45} \left( \frac{1}{5} \frac{2}{15} \right) + 1 \frac{2}{3} \right] = \frac{-5}{27} \)
c) \( \left( \frac{4}{5} + \frac{-9}{7} \right) \frac{2021}{2022} + \left( \frac{-5}{7} + \frac{-6}{5} \right) \frac{2021}{2022} \)
d) \( \frac{1}{29} + \frac{3}{26} + \frac{9}{238} \)
\( \frac{-3}{29} + \frac{13}{11} + \frac{3}{9} = \frac{119}{119} \)