Answers

Subtract 81/12 from 14/18

1^st number: 14/18, 2^nd number: 6 9/12

14/18 - 81/12 is -215/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 12 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 18 × 2 = 36,
   14/18 = 14 × 2/18 × 2 = 28/36
3. Likewise, for the 2nd fraction, since 12 × 3 = 36,
   81/12 = 81 × 3/12 × 3 = 243/36
4. Subtract the two like fractions:
   28/36 - 243/36 = 28 - 243/36 = -215/36

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