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Add 21/9 and 20/80

1st number: 2 3/9, 2nd number: 20/80

21/9 + 20/80 is 31/12.

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,
    21/9 = 21 × 80/9 × 80 = 1680/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    20/80 = 20 × 9/80 × 9 = 180/720
  4. Add the two like fractions:
    1680/720 + 180/720 = 1680 + 180/720 = 1860/720
  5. 1860/720 simplified gives 31/12
  6. So, 21/9 + 20/80 = 31/12
    In mixed form: 27/12

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