So sánh \(\dfrac{9}{71}\) và \(\dfrac{27}{211}.\)
\(\dfrac{9}{71}>\dfrac{27}{211}.\)\(\dfrac{9}{71}<\dfrac{27}{211}.\)\(\dfrac{9}{71}\geq\dfrac{27}{211}.\)\(\dfrac{9}{71}=\dfrac{27}{211}.\)Hướng dẫn giải:Ta có: \(\dfrac{9}{71}=\dfrac{27}{213}.\)
Vì \(\dfrac{27}{213}<\dfrac{27}{211}\) nên \(\dfrac{9}{71}<\dfrac{27}{211}.\)
