Answers

Subtract 49/81 from 42/24

1^st number: 1 18/24, 2^nd number: 49/81

42/24 - 49/81 is 371/324.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 24 × 27 = 648,
   42/24 = 42 × 27/24 × 27 = 1134/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   49/81 = 49 × 8/81 × 8 = 392/648
4. Subtract the two like fractions:
   1134/648 - 392/648 = 1134 - 392/648 = 742/648
5. After reducing the fraction, the answer is 371/324
6. In mixed form: 147/324

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