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Add 18/90 and 16/20

18/90 + 16/20 is 1/1.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 90 × 2 = 180,
    18/90 = 18 × 2/90 × 2 = 36/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    16/20 = 16 × 9/20 × 9 = 144/180
  4. Add the two like fractions:
    36/180 + 144/180 = 36 + 144/180 = 180/180
  5. 180/180 simplified gives 1/1
  6. So, 18/90 + 16/20 = 1/1

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