Answers

Subtract 81/20 from 20/24

1^st number: 20/24, 2^nd number: 4 1/20

20/24 - 81/20 is -193/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 20 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 24 × 5 = 120,
   20/24 = 20 × 5/24 × 5 = 100/120
3. Likewise, for the 2nd fraction, since 20 × 6 = 120,
   81/20 = 81 × 6/20 × 6 = 486/120
4. Subtract the two like fractions:
   100/120 - 486/120 = 100 - 486/120 = -386/120
5. After reducing the fraction, the answer is -193/60

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