Answers

Subtract 21/8 from 54/14

1^st number: 3 12/14, 2^nd number: 2 5/8

54/14 - 21/8 is 69/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 8 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 14 × 4 = 56,
   54/14 = 54 × 4/14 × 4 = 216/56
3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
   21/8 = 21 × 7/8 × 7 = 147/56
4. Subtract the two like fractions:
   216/56 - 147/56 = 216 - 147/56 = 69/56
5. In mixed form: 113/56

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