Answers

Subtract 20/72 from 4/54

4/54 - 20/72 is -11/54.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 72 is 216
   
   Next, find the equivalent fraction of both fractional numbers with denominator 216
2. For the 1st fraction, since 54 × 4 = 216,
   4/54 = 4 × 4/54 × 4 = 16/216
3. Likewise, for the 2nd fraction, since 72 × 3 = 216,
   20/72 = 20 × 3/72 × 3 = 60/216
4. Subtract the two like fractions:
   16/216 - 60/216 = 16 - 60/216 = -44/216
5. After reducing the fraction, the answer is -11/54

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