Answers

Subtract 4/42 from 2/21

2/21 - 4/42 is 0/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 42 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 42 × 1 = 42,
   4/42 = 4 × 1/42 × 1 = 4/42
4. Subtract the two like fractions:
   4/42 - 4/42 = 4 - 4/42 = 0/42
5. The answer is 0

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