Answers

Subtract 63/8 from 21/98

1^st number: 21/98, 2^nd number: 7 7/8

21/98 - 63/8 is -429/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 8 is 392
   
   Next, find the equivalent fraction of both fractional numbers with denominator 392
2. For the 1st fraction, since 98 × 4 = 392,
   21/98 = 21 × 4/98 × 4 = 84/392
3. Likewise, for the 2nd fraction, since 8 × 49 = 392,
   63/8 = 63 × 49/8 × 49 = 3087/392
4. Subtract the two like fractions:
   84/392 - 3087/392 = 84 - 3087/392 = -3003/392
5. After reducing the fraction, the answer is -429/56

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