Answers

Subtract 70/54 from 28/20

1^st number: 1 8/20, 2^nd number: 1 16/54

28/20 - 70/54 is 14/135.

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,
   28/20 = 28 × 27/20 × 27 = 756/540
3. Likewise, for the 2nd fraction, since 54 × 10 = 540,
   70/54 = 70 × 10/54 × 10 = 700/540
4. Subtract the two like fractions:
   756/540 - 700/540 = 756 - 700/540 = 56/540
5. After reducing the fraction, the answer is 14/135

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