Answers

Subtract 15/16 from 21/8

1^st number: 2 5/8, 2^nd number: 15/16

21/8 - 15/16 is 27/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 16 is 16
   
   Next, find the equivalent fraction of both fractional numbers with denominator 16
2. For the 1st fraction, since 8 × 2 = 16,
   21/8 = 21 × 2/8 × 2 = 42/16
3. Likewise, for the 2nd fraction, since 16 × 1 = 16,
   15/16 = 15 × 1/16 × 1 = 15/16
4. Subtract the two like fractions:
   42/16 - 15/16 = 42 - 15/16 = 27/16
5. In mixed form: 111/16

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