Answers

Subtract 40/49 from 20/27

20/27 - 40/49 is -100/1323.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 49 is 1323
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1323
2. For the 1st fraction, since 27 × 49 = 1323,
   20/27 = 20 × 49/27 × 49 = 980/1323
3. Likewise, for the 2nd fraction, since 49 × 27 = 1323,
   40/49 = 40 × 27/49 × 27 = 1080/1323
4. Subtract the two like fractions:
   980/1323 - 1080/1323 = 980 - 1080/1323 = -100/1323

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