Answers

Subtract 30/81 from 40/45

40/45 - 30/81 is 14/27.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 45 × 9 = 405,
   40/45 = 40 × 9/45 × 9 = 360/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   30/81 = 30 × 5/81 × 5 = 150/405
4. Subtract the two like fractions:
   360/405 - 150/405 = 360 - 150/405 = 210/405
5. After reducing the fraction, the answer is 14/27

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