Answers

Subtract 21/8 from 54/10

1^st number: 5 4/10, 2^nd number: 2 5/8

54/10 - 21/8 is 111/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 8 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 10 × 4 = 40,
   54/10 = 54 × 4/10 × 4 = 216/40
3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
   21/8 = 21 × 5/8 × 5 = 105/40
4. Subtract the two like fractions:
   216/40 - 105/40 = 216 - 105/40 = 111/40
5. In mixed form: 231/40

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