Answers

Subtract 21/16 from 7/27

1^st number: 7/27, 2^nd number: 1 5/16

7/27 - 21/16 is -455/432.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 16 is 432
   
   Next, find the equivalent fraction of both fractional numbers with denominator 432
2. For the 1st fraction, since 27 × 16 = 432,
   7/27 = 7 × 16/27 × 16 = 112/432
3. Likewise, for the 2nd fraction, since 16 × 27 = 432,
   21/16 = 21 × 27/16 × 27 = 567/432
4. Subtract the two like fractions:
   112/432 - 567/432 = 112 - 567/432 = -455/432

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