Question

3/5.17/21.2/5

dấu.này thay nhân nhé vì máy tính ko có nhân

tính bằng cách thuận tiện nhất

Answer 1

\(\dfrac{3}{5}.\dfrac{17}{21}.\dfrac{2}{5}=\dfrac{3.17.2}{5.21.5}\dfrac{102}{525}=\dfrac{34}{175}\)

Answer 2

\(\dfrac{3}{5}.\dfrac{17}{21}.\dfrac{2}{5}=\dfrac{3.17.2}{5.21.5}=\dfrac{102}{525}=\dfrac{34}{175}\)

Answer 3

\(\dfrac{3}{5}\times\dfrac{17}{21}\times\dfrac{2}{5}=\dfrac{3\times17\times2}{5\times21\times5}=\dfrac{102}{525}=\dfrac{34}{175}\)