Answers

Subtract 49/81 from 42/12

1^st number: 3 6/12, 2^nd number: 49/81

42/12 - 49/81 is 469/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 12 × 27 = 324,
   42/12 = 42 × 27/12 × 27 = 1134/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   49/81 = 49 × 4/81 × 4 = 196/324
4. Subtract the two like fractions:
   1134/324 - 196/324 = 1134 - 196/324 = 938/324
5. After reducing the fraction, the answer is 469/162
6. In mixed form: 2145/162

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