Answers

Subtract 3/54 from 21/98

21/98 - 3/54 is 10/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 54 is 2646
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2646
2. For the 1st fraction, since 98 × 27 = 2646,
   21/98 = 21 × 27/98 × 27 = 567/2646
3. Likewise, for the 2nd fraction, since 54 × 49 = 2646,
   3/54 = 3 × 49/54 × 49 = 147/2646
4. Subtract the two like fractions:
   567/2646 - 147/2646 = 567 - 147/2646 = 420/2646
5. After reducing the fraction, the answer is 10/63

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