Answers

Subtract 21/63 from 81/63

1^st number: 1 18/63, 2^nd number: 21/63

81/63 - 21/63 is 20/21.

Steps for subtracting fractions

1. Subtract the two fractions:
   81/63 - 21/63 = 81 - 21/63 = 60/63
2. After reducing the fraction, the answer is 20/21

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