Câu hỏi của Ninh Phan

Question

Tính cách thuận tiện nhất 2/5 * 3/4 * 5/6 : 3/4

YangSu · Accepted Answer

$\dfrac{2}{5}\times\dfrac{3}{4}\times\dfrac{5}{6}:\dfrac{3}{4}$

$=\dfrac{2}{5}\times\dfrac{3}{4}\times\dfrac{5}{6}\times\dfrac{4}{3}$

$=\left(\dfrac{2}{5}\times\dfrac{5}{6}\right)\times\left(\dfrac{3}{4}\times\dfrac{4}{3}\right)$

$=\dfrac{2}{6}\times1$

$=\dfrac{1}{3}$

Câu trả lời:

$\dfrac{2}{5}\times\dfrac{3}{4}\times\dfrac{5}{6}:\dfrac{3}{4}$

$=\dfrac{2}{5}\times\dfrac{3}{4}\times\dfrac{5}{6}\times\dfrac{4}{3}$

$=\left(\dfrac{2}{5}\times\dfrac{5}{6}\right)\times\left(\dfrac{3}{4}\times\dfrac{4}{3}\right)$

$=\dfrac{2}{6}\times1$

$=\dfrac{1}{3}$