Question

Chứng minh: \(\frac{abab}{cdcd}=\frac{ababab}{cdcdcd}\)

Answer 1

Ta có abab/cdcd=abab:101/cdcd:101=ab/cd

          ababab/cdcdcd=ababab:10101/cdcdcd:10101=ab/cd

Vì ab/cd=ab/cd nên  abab/cdcd= ababab/cdcdcd

Answer 2

\(\frac{abab}{cdcd}=\frac{ab.101}{cd.101}=\frac{ab}{cd}\)

\(\frac{ababab}{cdcdcd}=\frac{ab.10101}{cd.10101}=\frac{ab}{cd}\)

VẬY \(\frac{abab}{cdcd}=\frac{ababab}{cdcdcd}\)