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Add 28/12 and 20/80

1st number: 2 4/12, 2nd number: 20/80

28/12 + 20/80 is 31/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 12 × 20 = 240,
    28/12 = 28 × 20/12 × 20 = 560/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    20/80 = 20 × 3/80 × 3 = 60/240
  4. Add the two like fractions:
    560/240 + 60/240 = 560 + 60/240 = 620/240
  5. 620/240 simplified gives 31/12
  6. So, 28/12 + 20/80 = 31/12
    In mixed form: 27/12

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