Answers

Subtract 20/40 from 40/54

40/54 - 20/40 is 13/54.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 54 × 20 = 1080,
   40/54 = 40 × 20/54 × 20 = 800/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   20/40 = 20 × 27/40 × 27 = 540/1080
4. Subtract the two like fractions:
   800/1080 - 540/1080 = 800 - 540/1080 = 260/1080
5. After reducing the fraction, the answer is 13/54

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