Answers

Subtract 56/64 from 28/54

28/54 - 56/64 is -77/216.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 64 is 1728
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1728
2. For the 1st fraction, since 54 × 32 = 1728,
   28/54 = 28 × 32/54 × 32 = 896/1728
3. Likewise, for the 2nd fraction, since 64 × 27 = 1728,
   56/64 = 56 × 27/64 × 27 = 1512/1728
4. Subtract the two like fractions:
   896/1728 - 1512/1728 = 896 - 1512/1728 = -616/1728
5. After reducing the fraction, the answer is -77/216

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