Answers

Subtract 12/20 from 9/4

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

9/4 - 12/20 is 33/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 20 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 4 × 5 = 20,
   9/4 = 9 × 5/4 × 5 = 45/20
3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
   12/20 = 12 × 1/20 × 1 = 12/20
4. Subtract the two like fractions:
   45/20 - 12/20 = 45 - 12/20 = 33/20
5. In mixed form: 113/20

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