Answers

Subtract 72/98 from 27/80

27/80 - 72/98 is -1557/3920.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 98 is 3920
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3920
2. For the 1st fraction, since 80 × 49 = 3920,
   27/80 = 27 × 49/80 × 49 = 1323/3920
3. Likewise, for the 2nd fraction, since 98 × 40 = 3920,
   72/98 = 72 × 40/98 × 40 = 2880/3920
4. Subtract the two like fractions:
   1323/3920 - 2880/3920 = 1323 - 2880/3920 = -1557/3920

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