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Add 9/20 and 4/90

9/20 + 4/90 is 89/180.

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,
    4/90 = 4 × 2/90 × 2 = 8/180
  4. Add the two like fractions:
    81/180 + 8/180 = 81 + 8/180 = 89/180
  5. So, 9/20 + 4/90 = 89/180

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