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Add 27/18 and 15/20

1st number: 1 9/18, 2nd number: 15/20

27/18 + 15/20 is 9/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    27/18 = 27 × 10/18 × 10 = 270/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    15/20 = 15 × 9/20 × 9 = 135/180
  4. Add the two like fractions:
    270/180 + 135/180 = 270 + 135/180 = 405/180
  5. 405/180 simplified gives 9/4
  6. So, 27/18 + 15/20 = 9/4
    In mixed form: 21/4

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