Answers

Subtract 2/21 from 21/6

1^st number: 3 3/6, 2^nd number: 2/21

21/6 - 2/21 is 143/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 6 and 21 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 6 × 7 = 42,
   21/6 = 21 × 7/6 × 7 = 147/42
3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
   2/21 = 2 × 2/21 × 2 = 4/42
4. Subtract the two like fractions:
   147/42 - 4/42 = 147 - 4/42 = 143/42
5. In mixed form: 317/42

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