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Add 28/80 and 90/9

1st number: 28/80, 2nd number: 10 0/9

28/80 + 90/9 is 207/20.

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,
    28/80 = 28 × 9/80 × 9 = 252/720
  3. Likewise, for the 2nd fraction, since 9 × 80 = 720,
    90/9 = 90 × 80/9 × 80 = 7200/720
  4. Add the two like fractions:
    252/720 + 7200/720 = 252 + 7200/720 = 7452/720
  5. 7452/720 simplified gives 207/20
  6. So, 28/80 + 90/9 = 207/20
    In mixed form: 107/20

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