Answers

Subtract 21/63 from 10/98

10/98 - 21/63 is -34/147.

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,
   10/98 = 10 × 9/98 × 9 = 90/882
3. Likewise, for the 2nd fraction, since 63 × 14 = 882,
   21/63 = 21 × 14/63 × 14 = 294/882
4. Subtract the two like fractions:
   90/882 - 294/882 = 90 - 294/882 = -204/882
5. After reducing the fraction, the answer is -34/147

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