Answers

Subtract 15/20 from 56/54

1^st number: 1 2/54, 2^nd number: 15/20

56/54 - 15/20 is 31/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 20 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 54 × 10 = 540,
   56/54 = 56 × 10/54 × 10 = 560/540
3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
   15/20 = 15 × 27/20 × 27 = 405/540
4. Subtract the two like fractions:
   560/540 - 405/540 = 560 - 405/540 = 155/540
5. After reducing the fraction, the answer is 31/108

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