Answers

Subtract 5/40 from 2/81

2/81 - 5/40 is -65/648.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 40 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 81 × 40 = 3240,
   2/81 = 2 × 40/81 × 40 = 80/3240
3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
   5/40 = 5 × 81/40 × 81 = 405/3240
4. Subtract the two like fractions:
   80/3240 - 405/3240 = 80 - 405/3240 = -325/3240
5. After reducing the fraction, the answer is -65/648

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