Answers

Subtract 63/4 from 21/64

1^st number: 21/64, 2^nd number: 15 3/4

21/64 - 63/4 is -987/64.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 4 is 64
   
   Next, find the equivalent fraction of both fractional numbers with denominator 64
2. For the 1st fraction, since 64 × 1 = 64,
   21/64 = 21 × 1/64 × 1 = 21/64
3. Likewise, for the 2nd fraction, since 4 × 16 = 64,
   63/4 = 63 × 16/4 × 16 = 1008/64
4. Subtract the two like fractions:
   21/64 - 1008/64 = 21 - 1008/64 = -987/64

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