Answers

Subtract 84/54 from 42/20

1^st number: 2 2/20, 2^nd number: 1 30/54

42/20 - 84/54 is 49/90.

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,
   42/20 = 42 × 27/20 × 27 = 1134/540
3. Likewise, for the 2nd fraction, since 54 × 10 = 540,
   84/54 = 84 × 10/54 × 10 = 840/540
4. Subtract the two like fractions:
   1134/540 - 840/540 = 1134 - 840/540 = 294/540
5. After reducing the fraction, the answer is 49/90

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