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Add 28/64 and 21/20

1st number: 28/64, 2nd number: 1 1/20

28/64 + 21/20 is 119/80.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 64 × 5 = 320,
    28/64 = 28 × 5/64 × 5 = 140/320
  3. Likewise, for the 2nd fraction, since 20 × 16 = 320,
    21/20 = 21 × 16/20 × 16 = 336/320
  4. Add the two like fractions:
    140/320 + 336/320 = 140 + 336/320 = 476/320
  5. 476/320 simplified gives 119/80
  6. So, 28/64 + 21/20 = 119/80
    In mixed form: 139/80

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