; ; ?a) dfrac{2}{3}timesdfrac{4}{5} dfrac{4}{5}timesdfrac{2}{3}b) left(dfrac{1}{3}timesdfrac{2}{5}right)timesdfrac{3}{4} dfrac{1}{3}timesleft(dfrac{2}{5}timesdfrac{3}{4}right)c) left(dfrac{1}{3}+dfrac{2}{15}right)timesdfrac{3}{4} dfrac{1}{3}timesdfrac{3}{4}+dfrac{2}{15}timesdfrac{3}{4}
Đọc tiếp
>; <; =?
a) \(\dfrac{2}{3}\times\dfrac{4}{5}\) 
\(\dfrac{4}{5}\times\dfrac{2}{3}\)
b) \(\left(\dfrac{1}{3}\times\dfrac{2}{5}\right)\times\dfrac{3}{4}\) 
\(\dfrac{1}{3}\times\left(\dfrac{2}{5}\times\dfrac{3}{4}\right)\)
c) \(\left(\dfrac{1}{3}+\dfrac{2}{15}\right)\times\dfrac{3}{4}\) 
\(\dfrac{1}{3}\times\dfrac{3}{4}+\dfrac{2}{15}\times\dfrac{3}{4}\)
