Answers

Subtract 25/81 from 6/80

6/80 - 25/81 is -757/3240.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 81 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 80 × 81 = 6480,
   6/80 = 6 × 81/80 × 81 = 486/6480
3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
   25/81 = 25 × 80/81 × 80 = 2000/6480
4. Subtract the two like fractions:
   486/6480 - 2000/6480 = 486 - 2000/6480 = -1514/6480
5. After reducing the fraction, the answer is -757/3240

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