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Add 18/27 and 12/20

18/27 + 12/20 is 19/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 20 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 27 × 20 = 540,
    18/27 = 18 × 20/27 × 20 = 360/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    12/20 = 12 × 27/20 × 27 = 324/540
  4. Add the two like fractions:
    360/540 + 324/540 = 360 + 324/540 = 684/540
  5. 684/540 simplified gives 19/15
  6. So, 18/27 + 12/20 = 19/15
    In mixed form: 14/15

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