Answers

Subtract 81/42 from 49/12

1^st number: 4 1/12, 2^nd number: 1 39/42

49/12 - 81/42 is 181/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   49/12 = 49 × 7/12 × 7 = 343/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   81/42 = 81 × 2/42 × 2 = 162/84
4. Subtract the two like fractions:
   343/84 - 162/84 = 343 - 162/84 = 181/84
5. In mixed form: 213/84

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