Answers

Subtract 3/6 from 5/21

5/21 - 3/6 is -11/42.

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,
   5/21 = 5 × 2/21 × 2 = 10/42
3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
   3/6 = 3 × 7/6 × 7 = 21/42
4. Subtract the two like fractions:
   10/42 - 21/42 = 10 - 21/42 = -11/42

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