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Add 28/64 and 21/30

28/64 + 21/30 is 91/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 64 and 30 is 960

    Next, find the equivalent fraction of both fractional numbers with denominator 960
  2. For the 1st fraction, since 64 × 15 = 960,
    28/64 = 28 × 15/64 × 15 = 420/960
  3. Likewise, for the 2nd fraction, since 30 × 32 = 960,
    21/30 = 21 × 32/30 × 32 = 672/960
  4. Add the two like fractions:
    420/960 + 672/960 = 420 + 672/960 = 1092/960
  5. 1092/960 simplified gives 91/80
  6. So, 28/64 + 21/30 = 91/80
    In mixed form: 111/80

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