Seudónimo Seudónimo
  • 25-09-2017
  • Mathematics
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Аноним Аноним
  • 25-09-2017
the LCM of 7 and 3 = 21 ,  so 5/7  = 15/21 and 2/3 = 14/21

so  its  15/21 - 14 /21 = 1/21
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