Answers

Subtract 90/7 from 63/56

1^st number: 1 7/56, 2^nd number: 12 6/7

63/56 - 90/7 is -657/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 7 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 56 × 1 = 56,
   63/56 = 63 × 1/56 × 1 = 63/56
3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
   90/7 = 90 × 8/7 × 8 = 720/56
4. Subtract the two like fractions:
   63/56 - 720/56 = 63 - 720/56 = -657/56

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