Answers

Subtract 70/63 from 20/98

1^st number: 20/98, 2^nd number: 1 7/63

20/98 - 70/63 is -400/441.

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,
   20/98 = 20 × 9/98 × 9 = 180/882
3. Likewise, for the 2nd fraction, since 63 × 14 = 882,
   70/63 = 70 × 14/63 × 14 = 980/882
4. Subtract the two like fractions:
   180/882 - 980/882 = 180 - 980/882 = -800/882
5. After reducing the fraction, the answer is -400/441

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