Answers

Subtract 27/49 from 9/20

9/20 - 27/49 is -99/980.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 49 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 20 × 49 = 980,
   9/20 = 9 × 49/20 × 49 = 441/980
3. Likewise, for the 2nd fraction, since 49 × 20 = 980,
   27/49 = 27 × 20/49 × 20 = 540/980
4. Subtract the two like fractions:
   441/980 - 540/980 = 441 - 540/980 = -99/980

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