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Add 15/18 and 3/12

15/18 + 3/12 is 13/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 12 is 36

    Next, find the equivalent fraction of both fractional numbers with denominator 36
  2. For the 1st fraction, since 18 × 2 = 36,
    15/18 = 15 × 2/18 × 2 = 30/36
  3. Likewise, for the 2nd fraction, since 12 × 3 = 36,
    3/12 = 3 × 3/12 × 3 = 9/36
  4. Add the two like fractions:
    30/36 + 9/36 = 30 + 9/36 = 39/36
  5. 39/36 simplified gives 13/12
  6. So, 15/18 + 3/12 = 13/12
    In mixed form: 11/12

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