Answers

Subtract 2/30 from 4/81

4/81 - 2/30 is -7/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 30 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   4/81 = 4 × 10/81 × 10 = 40/810
3. Likewise, for the 2nd fraction, since 30 × 27 = 810,
   2/30 = 2 × 27/30 × 27 = 54/810
4. Subtract the two like fractions:
   40/810 - 54/810 = 40 - 54/810 = -14/810
5. After reducing the fraction, the answer is -7/405

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