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Add 21/25 and 18/64

21/25 + 18/64 is 897/800.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 64 is 1600

    Next, find the equivalent fraction of both fractional numbers with denominator 1600
  2. For the 1st fraction, since 25 × 64 = 1600,
    21/25 = 21 × 64/25 × 64 = 1344/1600
  3. Likewise, for the 2nd fraction, since 64 × 25 = 1600,
    18/64 = 18 × 25/64 × 25 = 450/1600
  4. Add the two like fractions:
    1344/1600 + 450/1600 = 1344 + 450/1600 = 1794/1600
  5. 1794/1600 simplified gives 897/800
  6. So, 21/25 + 18/64 = 897/800
    In mixed form: 197/800

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