Question

Rút gọn

a)\(\frac{21.22+76.79+81.85}{42.44+152.158+162.170}\)

b)\(\frac{20052005}{20062006}\)

 

Answer 1

a)\(\frac{1}{4}\)(\(\frac{21.22+76.79+81.85}{21.22+76.79+81.85}\))=\(\frac{1}{4}\)

b)\(\frac{20052005}{20062006}\)=\(\frac{20052005:10001}{20062006:10001}\)=\(\frac{2005}{2006}\)