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Add 9/12 and 20/27

9/12 + 20/27 is 161/108.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 27 is 108
  2. For the 1st fraction, since 12 × 9 = 108,
    9/12 = 9 × 9/12 × 9 = 81/108
  3. Likewise, for the 2nd fraction, since 27 × 4 = 108,
    20/27 = 20 × 4/27 × 4 = 80/108
  4. Add the two fractions:
    81/108 + 80/108 = 81 + 80/108 = 161/108
  5. In mixed form: 153/108

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