Answers

Subtract 70/63 from 5/20

1^st number: 5/20, 2^nd number: 1 7/63

5/20 - 70/63 is -31/36.

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,
   5/20 = 5 × 63/20 × 63 = 315/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   70/63 = 70 × 20/63 × 20 = 1400/1260
4. Subtract the two like fractions:
   315/1260 - 1400/1260 = 315 - 1400/1260 = -1085/1260
5. After reducing the fraction, the answer is -31/36

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