Answers

Subtract 20/36 from 15/54

15/54 - 20/36 is -5/18.

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,
   15/54 = 15 × 2/54 × 2 = 30/108
3. Likewise, for the 2nd fraction, since 36 × 3 = 108,
   20/36 = 20 × 3/36 × 3 = 60/108
4. Subtract the two like fractions:
   30/108 - 60/108 = 30 - 60/108 = -30/108
5. After reducing the fraction, the answer is -5/18

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