Answers

Subtract 50/42 from 28/81

1^st number: 28/81, 2^nd number: 1 8/42

28/81 - 50/42 is -479/567.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 42 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 81 × 14 = 1134,
   28/81 = 28 × 14/81 × 14 = 392/1134
3. Likewise, for the 2nd fraction, since 42 × 27 = 1134,
   50/42 = 50 × 27/42 × 27 = 1350/1134
4. Subtract the two like fractions:
   392/1134 - 1350/1134 = 392 - 1350/1134 = -958/1134
5. After reducing the fraction, the answer is -479/567

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