Answers

Subtract 72/6 from 21/12

1^st number: 1 9/12, 2^nd number: 12 0/6

21/12 - 72/6 is -41/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 6 is 12
   
   Next, find the equivalent fraction of both fractional numbers with denominator 12
2. For the 1st fraction, since 12 × 1 = 12,
   21/12 = 21 × 1/12 × 1 = 21/12
3. Likewise, for the 2nd fraction, since 6 × 2 = 12,
   72/6 = 72 × 2/6 × 2 = 144/12
4. Subtract the two like fractions:
   21/12 - 144/12 = 21 - 144/12 = -123/12
5. After reducing the fraction, the answer is -41/4

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