Answers

Subtract 20/63 from 42/20

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

42/20 - 20/63 is 1123/630.

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,
   42/20 = 42 × 63/20 × 63 = 2646/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   20/63 = 20 × 20/63 × 20 = 400/1260
4. Subtract the two like fractions:
   2646/1260 - 400/1260 = 2646 - 400/1260 = 2246/1260
5. After reducing the fraction, the answer is 1123/630
6. In mixed form: 1493/630

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