Answers

Subtract 70/15 from 21/98

1^st number: 21/98, 2^nd number: 4 10/15

21/98 - 70/15 is -187/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 15 is 1470
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1470
2. For the 1st fraction, since 98 × 15 = 1470,
   21/98 = 21 × 15/98 × 15 = 315/1470
3. Likewise, for the 2nd fraction, since 15 × 98 = 1470,
   70/15 = 70 × 98/15 × 98 = 6860/1470
4. Subtract the two like fractions:
   315/1470 - 6860/1470 = 315 - 6860/1470 = -6545/1470
5. After reducing the fraction, the answer is -187/42

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