Answers

Subtract 20/81 from 2/9

2/9 - 20/81 is -2/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 9 × 9 = 81,
   2/9 = 2 × 9/9 × 9 = 18/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   20/81 = 20 × 1/81 × 1 = 20/81
4. Subtract the two like fractions:
   18/81 - 20/81 = 18 - 20/81 = -2/81

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