Answers

Subtract 81/4 from 5/20

1^st number: 5/20, 2^nd number: 20 1/4

5/20 - 81/4 is -20/1.

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,
   5/20 = 5 × 1/20 × 1 = 5/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   81/4 = 81 × 5/4 × 5 = 405/20
4. Subtract the two like fractions:
   5/20 - 405/20 = 5 - 405/20 = -400/20
5. After reducing the fraction, the answer is -20/1

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