Answers

Subtract 80/27 from 21/64

1^st number: 21/64, 2^nd number: 2 26/27

21/64 - 80/27 is -4553/1728.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 27 is 1728
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1728
2. For the 1st fraction, since 64 × 27 = 1728,
   21/64 = 21 × 27/64 × 27 = 567/1728
3. Likewise, for the 2nd fraction, since 27 × 64 = 1728,
   80/27 = 80 × 64/27 × 64 = 5120/1728
4. Subtract the two like fractions:
   567/1728 - 5120/1728 = 567 - 5120/1728 = -4553/1728

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