Answers

Subtract 21/12 from 30/60

1^st number: 30/60, 2^nd number: 1 9/12

30/60 - 21/12 is -5/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 12 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 60 × 1 = 60,
   30/60 = 30 × 1/60 × 1 = 30/60
3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
   21/12 = 21 × 5/12 × 5 = 105/60
4. Subtract the two like fractions:
   30/60 - 105/60 = 30 - 105/60 = -75/60
5. After reducing the fraction, the answer is -5/4

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