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LuckyOwO

 frac{2}{3}  times  frac{6}{7}  div  frac{4}{7} = 1  \ 1) frac{2}{3}  times  frac{6}{7}  =  frac{12}{21}  =  frac{4}{7 }  \ 2) frac{4}{7}  div  frac{4}{7}  =  frac{4}{7}  times  frac{7}{4}  = 1

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