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Add 18/9 and 21/80

1st number: 2 0/9, 2nd number: 21/80

18/9 + 21/80 is 181/80.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 9 × 80 = 720,
    18/9 = 18 × 80/9 × 80 = 1440/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    21/80 = 21 × 9/80 × 9 = 189/720
  4. Add the two like fractions:
    1440/720 + 189/720 = 1440 + 189/720 = 1629/720
  5. 1629/720 simplified gives 181/80
  6. So, 18/9 + 21/80 = 181/80
    In mixed form: 221/80

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