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Add 3/18 and 4/20

3/18 + 4/20 is 11/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    3/18 = 3 × 10/18 × 10 = 30/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    4/20 = 4 × 9/20 × 9 = 36/180
  4. Add the two like fractions:
    30/180 + 36/180 = 30 + 36/180 = 66/180
  5. 66/180 simplified gives 11/30
  6. So, 3/18 + 4/20 = 11/30

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