Answers

Subtract 21/12 from 42/24

1^st number: 1 18/24, 2^nd number: 1 9/12

42/24 - 21/12 is 0/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 12 is 24
   
   Next, find the equivalent fraction of both fractional numbers with denominator 24
2. For the 1st fraction, since 24 × 1 = 24,
   42/24 = 42 × 1/24 × 1 = 42/24
3. Likewise, for the 2nd fraction, since 12 × 2 = 24,
   21/12 = 21 × 2/12 × 2 = 42/24
4. Subtract the two like fractions:
   42/24 - 42/24 = 42 - 42/24 = 0/24
5. The answer is 0

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