Answers

Subtract 81/21 from 28/21

1^st number: 1 7/21, 2^nd number: 3 18/21

28/21 - 81/21 is -53/21.

Steps for subtracting fractions

1. Subtract the two fractions:
   28/21 - 81/21 = 28 - 81/21 = -53/21

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