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Add 18/27 and 12/30

18/27 + 12/30 is 16/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 30 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 27 × 10 = 270,
    18/27 = 18 × 10/27 × 10 = 180/270
  3. Likewise, for the 2nd fraction, since 30 × 9 = 270,
    12/30 = 12 × 9/30 × 9 = 108/270
  4. Add the two like fractions:
    180/270 + 108/270 = 180 + 108/270 = 288/270
  5. 288/270 simplified gives 16/15
  6. So, 18/27 + 12/30 = 16/15
    In mixed form: 11/15

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