Answers

Subtract 8/54 from 7/20

7/20 - 8/54 is 109/540.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 54 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 20 × 27 = 540,
   7/20 = 7 × 27/20 × 27 = 189/540
3. Likewise, for the 2nd fraction, since 54 × 10 = 540,
   8/54 = 8 × 10/54 × 10 = 80/540
4. Subtract the two like fractions:
   189/540 - 80/540 = 189 - 80/540 = 109/540

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