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Add 12/20 and 18/56

12/20 + 18/56 is 129/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 56 is 280
  2. For the 1st fraction, since 20 × 14 = 280,
    12/20 = 12 × 14/20 × 14 = 168/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    18/56 = 18 × 5/56 × 5 = 90/280
  4. Add the two fractions:
    168/280 + 90/280 = 168 + 90/280 = 258/280
  5. After reducing the fraction, the answer is 129/140

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