Answers

Subtract 40/14 from 20/81

1^st number: 20/81, 2^nd number: 2 12/14

20/81 - 40/14 is -1480/567.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 14 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 81 × 14 = 1134,
   20/81 = 20 × 14/81 × 14 = 280/1134
3. Likewise, for the 2nd fraction, since 14 × 81 = 1134,
   40/14 = 40 × 81/14 × 81 = 3240/1134
4. Subtract the two like fractions:
   280/1134 - 3240/1134 = 280 - 3240/1134 = -2960/1134
5. After reducing the fraction, the answer is -1480/567

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