20x4per3x5per7- 8per5

20x4per3x5per7- 8per5

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20x4per3x5per7- 8per5

20. \\frac{4}{3} . \\frac{5}{7} - \\frac{8}{5} = \\frac{400}{21} - \\frac{8}{5} \\\\ \\\\ \\frac{2000-168}{105} = \\frac{1832}{105}

 

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