Answers

Subtract 20/63 from 72/20

1^st number: 3 12/20, 2^nd number: 20/63

72/20 - 20/63 is 1034/315.

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,
   72/20 = 72 × 63/20 × 63 = 4536/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   20/63 = 20 × 20/63 × 20 = 400/1260
4. Subtract the two like fractions:
   4536/1260 - 400/1260 = 4536 - 400/1260 = 4136/1260
5. After reducing the fraction, the answer is 1034/315
6. In mixed form: 389/315

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