Answers

Subtract 84/63 from 42/98

1^st number: 42/98, 2^nd number: 1 21/63

42/98 - 84/63 is -19/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 63 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 98 × 9 = 882,
   42/98 = 42 × 9/98 × 9 = 378/882
3. Likewise, for the 2nd fraction, since 63 × 14 = 882,
   84/63 = 84 × 14/63 × 14 = 1176/882
4. Subtract the two like fractions:
   378/882 - 1176/882 = 378 - 1176/882 = -798/882
5. After reducing the fraction, the answer is -19/21

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