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Add 1/80 and 21/9

1st number: 1/80, 2nd number: 2 3/9

1/80 + 21/9 is 563/240.

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,
    1/80 = 1 × 9/80 × 9 = 9/720
  3. Likewise, for the 2nd fraction, since 9 × 80 = 720,
    21/9 = 21 × 80/9 × 80 = 1680/720
  4. Add the two like fractions:
    9/720 + 1680/720 = 9 + 1680/720 = 1689/720
  5. 1689/720 simplified gives 563/240
  6. So, 1/80 + 21/9 = 563/240
    In mixed form: 283/240

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