Answers

Subtract 81/28 from 42/98

1^st number: 42/98, 2^nd number: 2 25/28

42/98 - 81/28 is -69/28.

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,
   42/98 = 42 × 2/98 × 2 = 84/196
3. Likewise, for the 2nd fraction, since 28 × 7 = 196,
   81/28 = 81 × 7/28 × 7 = 567/196
4. Subtract the two like fractions:
   84/196 - 567/196 = 84 - 567/196 = -483/196
5. After reducing the fraction, the answer is -69/28

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