Câu hỏi của Nam Đặng

Question

tính nhanh(nếu có thể)

2/9:16/13-2/9:8/5

Trịnh Minh Hoàng · Accepted Answer

$\dfrac{2}{9}:\dfrac{16}{13}-\dfrac{2}{9}:\dfrac{8}{5}\
=\dfrac{2}{9}\cdot\dfrac{13}{16}-\dfrac{2}{9}\cdot\dfrac{5}{8}\
=\dfrac{2}{9}\cdot\dfrac{13}{16}-\dfrac{2}{9}\cdot\dfrac{10}{16}\
=\dfrac{2}{9}\cdot\left(\dfrac{13}{16}-\dfrac{10}{16}\right)\
=\dfrac{2}{9}\cdot\dfrac{3}{16}\
=\dfrac{1}{24}$Câu trả lời: $\dfrac{2}{9}:\dfrac{16}{13}-\dfrac{2}{9}:\dfrac{8}{5}\
=\dfrac{2}{9}\cdot\dfrac{13}{16}-\dfrac{2}{9}\cdot\dfrac{5}{8}\
=\dfrac{2}{9}\cdot\dfrac{13}{16}-\dfrac{2}{9}\cdot\dfrac{10}{16}\
=\dfrac{2}{9}\cdot\left(\dfrac{13}{16}-\dfrac{10}{16}\right)\
=\dfrac{2}{9}\cdot\dfrac{3}{16}\
=\dfrac{1}{24}$

Nguyễn Lê Phước Thịnh · Answer

$\dfrac{2}{9}:\dfrac{16}{13}-\dfrac{2}{9}:\dfrac{8}{5}$$=\dfrac{2}{9}\cdot\dfrac{13}{16}-\dfrac{2}{9}\cdot\dfrac{5}{8}$$=\dfrac{2}{9}\left(\dfrac{13}{16}-\dfrac{5}{8}\right)=\dfrac{2}{9}\cdot\dfrac{3}{16}=\dfrac{1}{24}$Câu trả lời: $\dfrac{2}{9}:\dfrac{16}{13}-\dfrac{2}{9}:\dfrac{8}{5}$$=\dfrac{2}{9}\cdot\dfrac{13}{16}-\dfrac{2}{9}\cdot\dfrac{5}{8}$$=\dfrac{2}{9}\left(\dfrac{13}{16}-\dfrac{5}{8}\right)=\dfrac{2}{9}\cdot\dfrac{3}{16}=\dfrac{1}{24}$

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