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Add 18/20 and 12/64

18/20 + 12/64 is 87/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 64 is 320

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 20 × 16 = 320,
    18/20 = 18 × 16/20 × 16 = 288/320
  3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
    12/64 = 12 × 5/64 × 5 = 60/320
  4. Add the two like fractions:
    288/320 + 60/320 = 288 + 60/320 = 348/320
  5. 348/320 simplified gives 87/80
  6. So, 18/20 + 12/64 = 87/80
    In mixed form: 17/80

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