Answers

Subtract 63/8 from 12/28

1^st number: 12/28, 2^nd number: 7 7/8

12/28 - 63/8 is -417/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 8 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 28 × 2 = 56,
   12/28 = 12 × 2/28 × 2 = 24/56
3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
   63/8 = 63 × 7/8 × 7 = 441/56
4. Subtract the two like fractions:
   24/56 - 441/56 = 24 - 441/56 = -417/56

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