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Add 9/20 and 18/90

9/20 + 18/90 is 13/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    9/20 = 9 × 9/20 × 9 = 81/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    18/90 = 18 × 2/90 × 2 = 36/180
  4. Add the two like fractions:
    81/180 + 36/180 = 81 + 36/180 = 117/180
  5. 117/180 simplified gives 13/20
  6. So, 9/20 + 18/90 = 13/20

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