Answers

Subtract 49/81 from 45/42

1^st number: 1 3/42, 2^nd number: 49/81

45/42 - 49/81 is 529/1134.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 81 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 42 × 27 = 1134,
   45/42 = 45 × 27/42 × 27 = 1215/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   49/81 = 49 × 14/81 × 14 = 686/1134
4. Subtract the two like fractions:
   1215/1134 - 686/1134 = 1215 - 686/1134 = 529/1134

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