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Add 28/40 and 54/64

28/40 + 54/64 is 247/160.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 64 is 320

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 40 × 8 = 320,
    28/40 = 28 × 8/40 × 8 = 224/320
  3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
    54/64 = 54 × 5/64 × 5 = 270/320
  4. Add the two like fractions:
    224/320 + 270/320 = 224 + 270/320 = 494/320
  5. 494/320 simplified gives 247/160
  6. So, 28/40 + 54/64 = 247/160
    In mixed form: 187/160

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