Answers

Add 28/64 and 6/81

28/64 + 6/81 is 221/432.

Steps for adding 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,
   6/81 = 6 × 64/81 × 64 = 384/5184
4. Add the two like fractions:
   2268/5184 + 384/5184 = 2268 + 384/5184 = 2652/5184
5. 2652/5184 simplified gives 221/432
6. So, 28/64 + 6/81 = 221/432

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