Answers

Subtract 1/81 from 49/42

1^st number: 1 7/42, 2^nd number: 1/81

49/42 - 1/81 is 187/162.

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,
   49/42 = 49 × 27/42 × 27 = 1323/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   1/81 = 1 × 14/81 × 14 = 14/1134
4. Subtract the two like fractions:
   1323/1134 - 14/1134 = 1323 - 14/1134 = 1309/1134
5. After reducing the fraction, the answer is 187/162
6. In mixed form: 125/162

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