Answers

Subtract 20/6 from 2/21

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

2/21 - 20/6 is -68/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 6 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   2/21 = 2 × 2/21 × 2 = 4/42
3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
   20/6 = 20 × 7/6 × 7 = 140/42
4. Subtract the two like fractions:
   4/42 - 140/42 = 4 - 140/42 = -136/42
5. After reducing the fraction, the answer is -68/21

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