Answers

Subtract 28/81 from 4/12

4/12 - 28/81 is -1/81.

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,
   4/12 = 4 × 27/12 × 27 = 108/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   28/81 = 28 × 4/81 × 4 = 112/324
4. Subtract the two like fractions:
   108/324 - 112/324 = 108 - 112/324 = -4/324
5. After reducing the fraction, the answer is -1/81

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