So sánh: \(\frac{2}{11}+\frac{3}{22} \) >||=||< \(\frac{2}{22}+\frac{3}{22}.\)
Hướng dẫn giải:\(\frac{2}{11}+\frac{3}{22}=\frac{4}{22}+\frac{3}{22}=\frac{7}{22}.\)
\(\frac{2}{22}+\frac{3}{22}=\frac{5}{22}.\)
Vì \(\frac{7}{22}>\frac{5}{12}\) nên \(\frac{2}{11}+\frac{3}{22} >\frac{2}{22}+\frac{3}{22}.\)
