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Add 12/80 and 15/9

1st number: 12/80, 2nd number: 1 6/9

12/80 + 15/9 is 109/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 9 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    12/80 = 12 × 9/80 × 9 = 108/720
  3. Likewise, for the 2nd fraction, since 9 × 80 = 720,
    15/9 = 15 × 80/9 × 80 = 1200/720
  4. Add the two like fractions:
    108/720 + 1200/720 = 108 + 1200/720 = 1308/720
  5. 1308/720 simplified gives 109/60
  6. So, 12/80 + 15/9 = 109/60
    In mixed form: 149/60

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