Câu hỏi của nguyễn phu trọng

Question

(y-2/5):4/3= 3/8 tính giá trị của y

Hà Quang Minh · Accepted Answer

$\left(y-\dfrac{2}{5}\right):\dfrac{4}{3}=\dfrac{3}{8}\ \Leftrightarrow y-\dfrac{2}{5}=\dfrac{3}{8}\cdot\dfrac{4}{3}\ \Leftrightarrow y-\dfrac{2}{5}=\dfrac{1}{2}\ \Leftrightarrow y=\dfrac{9}{10}$

Câu trả lời:

$\left(y-\dfrac{2}{5}\right):\dfrac{4}{3}=\dfrac{3}{8}\ \Leftrightarrow y-\dfrac{2}{5}=\dfrac{3}{8}\cdot\dfrac{4}{3}\ \Leftrightarrow y-\dfrac{2}{5}=\dfrac{1}{2}\ \Leftrightarrow y=\dfrac{9}{10}$

Nguyễn Đăng Nhân · Answer

$\left(y-\dfrac{2}{5}\right):\dfrac{4}{3}=\dfrac{3}{8}$

$y-\dfrac{2}{5}=\dfrac{3}{8}\cdot\dfrac{4}{3}=\dfrac{3\cdot4}{2\cdot4\cdot3}$

$y-\dfrac{2}{5}=\dfrac{1}{2}$

$y=\dfrac{1}{2}+\dfrac{2}{5}$

$y=\dfrac{5}{10}+\dfrac{4}{10}=\dfrac{9}{10}$

Câu trả lời:

$\left(y-\dfrac{2}{5}\right):\dfrac{4}{3}=\dfrac{3}{8}$

$y-\dfrac{2}{5}=\dfrac{3}{8}\cdot\dfrac{4}{3}=\dfrac{3\cdot4}{2\cdot4\cdot3}$

$y-\dfrac{2}{5}=\dfrac{1}{2}$

$y=\dfrac{1}{2}+\dfrac{2}{5}$

$y=\dfrac{5}{10}+\dfrac{4}{10}=\dfrac{9}{10}$

Lê Minh Vũ · Answer

$\left(y-\dfrac{2}{5}\right)\div\dfrac{4}{3}=\dfrac{3}{8}$

$\left(y-\dfrac{2}{5}\right)=\dfrac{3}{8}\times\dfrac{4}{3}$

$y-\dfrac{2}{5}=\dfrac{1}{2}$

$y=\dfrac{1}{2}+\dfrac{2}{5}$

$y=\dfrac{9}{10}$

Câu trả lời:

$\left(y-\dfrac{2}{5}\right)\div\dfrac{4}{3}=\dfrac{3}{8}$

$\left(y-\dfrac{2}{5}\right)=\dfrac{3}{8}\times\dfrac{4}{3}$

$y-\dfrac{2}{5}=\dfrac{1}{2}$

$y=\dfrac{1}{2}+\dfrac{2}{5}$

$y=\dfrac{9}{10}$

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