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Add 21/54 and 63/64

21/54 + 63/64 is 791/576.

Steps for adding 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,
    21/54 = 21 × 32/54 × 32 = 672/1728
  3. Likewise, for the 2nd fraction, since 64 × 27 = 1728,
    63/64 = 63 × 27/64 × 27 = 1701/1728
  4. Add the two like fractions:
    672/1728 + 1701/1728 = 672 + 1701/1728 = 2373/1728
  5. 2373/1728 simplified gives 791/576
  6. So, 21/54 + 63/64 = 791/576
    In mixed form: 1215/576

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