Answers

Subtract 27/4 from 12/20

1^st number: 12/20, 2^nd number: 6 3/4

12/20 - 27/4 is -123/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 4 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 20 × 1 = 20,
   12/20 = 12 × 1/20 × 1 = 12/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   27/4 = 27 × 5/4 × 5 = 135/20
4. Subtract the two like fractions:
   12/20 - 135/20 = 12 - 135/20 = -123/20

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