Answers

Subtract 30/81 from 28/64

28/64 - 30/81 is 29/432.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 81 is 5184
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5184
2. For the 1st fraction, since 64 × 81 = 5184,
   28/64 = 28 × 81/64 × 81 = 2268/5184
3. Likewise, for the 2nd fraction, since 81 × 64 = 5184,
   30/81 = 30 × 64/81 × 64 = 1920/5184
4. Subtract the two like fractions:
   2268/5184 - 1920/5184 = 2268 - 1920/5184 = 348/5184
5. After reducing the fraction, the answer is 29/432

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