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Add 18/20 and 3/40

18/20 + 3/40 is 39/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 40 is 40
  2. For the 1st fraction, since 20 × 2 = 40,
    18/20 = 18 × 2/20 × 2 = 36/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    3/40 = 3 × 1/40 × 1 = 3/40
  4. Add the two fractions:
    36/40 + 3/40 = 36 + 3/40 = 39/40

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