Answers

Subtract 2/6 from 6/21

6/21 - 2/6 is -1/21.

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,
   6/21 = 6 × 2/21 × 2 = 12/42
3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
   2/6 = 2 × 7/6 × 7 = 14/42
4. Subtract the two like fractions:
   12/42 - 14/42 = 12 - 14/42 = -2/42
5. After reducing the fraction, the answer is -1/21

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