Answers

Subtract 98/63 from 15/20

1^st number: 15/20, 2^nd number: 1 35/63

15/20 - 98/63 is -29/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 63 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 20 × 63 = 1260,
   15/20 = 15 × 63/20 × 63 = 945/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   98/63 = 98 × 20/63 × 20 = 1960/1260
4. Subtract the two like fractions:
   945/1260 - 1960/1260 = 945 - 1960/1260 = -1015/1260
5. After reducing the fraction, the answer is -29/36

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