Answers

Subtract 20/63 from 42/5

1^st number: 8 2/5, 2^nd number: 20/63

42/5 - 20/63 is 2546/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 5 × 63 = 315,
   42/5 = 42 × 63/5 × 63 = 2646/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   20/63 = 20 × 5/63 × 5 = 100/315
4. Subtract the two like fractions:
   2646/315 - 100/315 = 2646 - 100/315 = 2546/315
5. In mixed form: 826/315

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