Ta có : \(1-\frac{21}{22}=\frac{1}{22}\); \(1-\frac{2011}{2012}=\frac{1}{2012}\)
Vì \(\frac{1}{22}>\frac{1}{2012}\)nên \(\frac{21}{22}
Ta có
\(\frac{21}{22}=1-\frac{1}{22}\)
\(\frac{2011}{2012}=1-\frac{1}{2012}\)
Vì \(\frac{1}{22}>\frac{1}{2012}\) nên \(\frac{21}{22}