Answers

Subtract 42/81 from 45/24

1^st number: 1 21/24, 2^nd number: 42/81

45/24 - 42/81 is 293/216.

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,
   45/24 = 45 × 27/24 × 27 = 1215/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   42/81 = 42 × 8/81 × 8 = 336/648
4. Subtract the two like fractions:
   1215/648 - 336/648 = 1215 - 336/648 = 879/648
5. After reducing the fraction, the answer is 293/216
6. In mixed form: 177/216

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