Answers

Subtract 81/42 from 20/3

1^st number: 6 2/3, 2^nd number: 1 39/42

20/3 - 81/42 is 199/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 3 and 42 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 3 × 14 = 42,
   20/3 = 20 × 14/3 × 14 = 280/42
3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
   81/42 = 81 × 1/42 × 1 = 81/42
4. Subtract the two like fractions:
   280/42 - 81/42 = 280 - 81/42 = 199/42
5. In mixed form: 431/42

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