Answers

Subtract 28/80 from 20/54

20/54 - 28/80 is 11/540.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 54 × 40 = 2160,
   20/54 = 20 × 40/54 × 40 = 800/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   28/80 = 28 × 27/80 × 27 = 756/2160
4. Subtract the two like fractions:
   800/2160 - 756/2160 = 800 - 756/2160 = 44/2160
5. After reducing the fraction, the answer is 11/540

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