Answers

Subtract 27/10 from 21/4

1^st number: 5 1/4, 2^nd number: 2 7/10

21/4 - 27/10 is 51/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 10 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 4 × 5 = 20,
   21/4 = 21 × 5/4 × 5 = 105/20
3. Likewise, for the 2nd fraction, since 10 × 2 = 20,
   27/10 = 27 × 2/10 × 2 = 54/20
4. Subtract the two like fractions:
   105/20 - 54/20 = 105 - 54/20 = 51/20
5. In mixed form: 211/20

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