Answers

Subtract 20/36 from 27/54

27/54 - 20/36 is -1/18.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 36 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 54 × 2 = 108,
   27/54 = 27 × 2/54 × 2 = 54/108
3. Likewise, for the 2nd fraction, since 36 × 3 = 108,
   20/36 = 20 × 3/36 × 3 = 60/108
4. Subtract the two like fractions:
   54/108 - 60/108 = 54 - 60/108 = -6/108
5. After reducing the fraction, the answer is -1/18

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