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Add 28/64 and 21/54

28/64 + 21/54 is 119/144.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 64 and 54 is 1728

    Next, find the equivalent fraction of both fractional numbers with denominator 1728
  2. For the 1st fraction, since 64 × 27 = 1728,
    28/64 = 28 × 27/64 × 27 = 756/1728
  3. Likewise, for the 2nd fraction, since 54 × 32 = 1728,
    21/54 = 21 × 32/54 × 32 = 672/1728
  4. Add the two like fractions:
    756/1728 + 672/1728 = 756 + 672/1728 = 1428/1728
  5. 1428/1728 simplified gives 119/144
  6. So, 28/64 + 21/54 = 119/144

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