Answers

Subtract 16/27 from 21/36

21/36 - 16/27 is -1/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 27 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 36 × 3 = 108,
   21/36 = 21 × 3/36 × 3 = 63/108
3. Likewise, for the 2nd fraction, since 27 × 4 = 108,
   16/27 = 16 × 4/27 × 4 = 64/108
4. Subtract the two like fractions:
   63/108 - 64/108 = 63 - 64/108 = -1/108

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