Answers

Subtract 63/28 from 21/98

1^st number: 21/98, 2^nd number: 2 7/28

21/98 - 63/28 is -57/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 28 is 196
   
   Next, find the equivalent fraction of both fractional numbers with denominator 196
2. For the 1st fraction, since 98 × 2 = 196,
   21/98 = 21 × 2/98 × 2 = 42/196
3. Likewise, for the 2nd fraction, since 28 × 7 = 196,
   63/28 = 63 × 7/28 × 7 = 441/196
4. Subtract the two like fractions:
   42/196 - 441/196 = 42 - 441/196 = -399/196
5. After reducing the fraction, the answer is -57/28

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