Answers

Subtract 16/54 from 21/56

21/56 - 16/54 is 17/216.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 54 is 1512
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1512
2. For the 1st fraction, since 56 × 27 = 1512,
   21/56 = 21 × 27/56 × 27 = 567/1512
3. Likewise, for the 2nd fraction, since 54 × 28 = 1512,
   16/54 = 16 × 28/54 × 28 = 448/1512
4. Subtract the two like fractions:
   567/1512 - 448/1512 = 567 - 448/1512 = 119/1512
5. After reducing the fraction, the answer is 17/216

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