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Add 12/20 and 4/36

12/20 + 4/36 is 32/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 36 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    12/20 = 12 × 9/20 × 9 = 108/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    4/36 = 4 × 5/36 × 5 = 20/180
  4. Add the two fractions:
    108/180 + 20/180 = 108 + 20/180 = 128/180
  5. After reducing the fraction, the answer is 32/45

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