Answers

Subtract 98/20 from 63/84

1^st number: 63/84, 2^nd number: 4 18/20

63/84 - 98/20 is -83/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   63/84 = 63 × 5/84 × 5 = 315/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   98/20 = 98 × 21/20 × 21 = 2058/420
4. Subtract the two like fractions:
   315/420 - 2058/420 = 315 - 2058/420 = -1743/420
5. After reducing the fraction, the answer is -83/20

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