Answers

Subtract 21/42 from 2/4

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

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 4 × 21 = 84,
   2/4 = 2 × 21/4 × 21 = 42/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   21/42 = 21 × 2/42 × 2 = 42/84
4. Subtract the two like fractions:
   42/84 - 42/84 = 42 - 42/84 = 0/84
5. The answer is 0

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