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Add 10/9 and 15/20

1st number: 1 1/9, 2nd number: 15/20

10/9 + 15/20 is 67/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 9 × 20 = 180,
    10/9 = 10 × 20/9 × 20 = 200/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    15/20 = 15 × 9/20 × 9 = 135/180
  4. Add the two like fractions:
    200/180 + 135/180 = 200 + 135/180 = 335/180
  5. 335/180 simplified gives 67/36
  6. So, 10/9 + 15/20 = 67/36
    In mixed form: 131/36

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