Answers

Subtract 4/20 from 24/81

24/81 - 4/20 is 13/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 20 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 81 × 20 = 1620,
   24/81 = 24 × 20/81 × 20 = 480/1620
3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
   4/20 = 4 × 81/20 × 81 = 324/1620
4. Subtract the two like fractions:
   480/1620 - 324/1620 = 480 - 324/1620 = 156/1620
5. After reducing the fraction, the answer is 13/135

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