Answers

Subtract 21/16 from 10/54

1^st number: 10/54, 2^nd number: 1 5/16

10/54 - 21/16 is -487/432.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 16 is 432
   
   Next, find the equivalent fraction of both fractional numbers with denominator 432
2. For the 1st fraction, since 54 × 8 = 432,
   10/54 = 10 × 8/54 × 8 = 80/432
3. Likewise, for the 2nd fraction, since 16 × 27 = 432,
   21/16 = 21 × 27/16 × 27 = 567/432
4. Subtract the two like fractions:
   80/432 - 567/432 = 80 - 567/432 = -487/432

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