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Add 30/18 and 15/20

1st number: 1 12/18, 2nd number: 15/20

30/18 + 15/20 is 29/12.

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,
    30/18 = 30 × 10/18 × 10 = 300/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    15/20 = 15 × 9/20 × 9 = 135/180
  4. Add the two like fractions:
    300/180 + 135/180 = 300 + 135/180 = 435/180
  5. 435/180 simplified gives 29/12
  6. So, 30/18 + 15/20 = 29/12
    In mixed form: 25/12

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