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Add 20/36 and 10/90

20/36 + 10/90 is 2/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 36 × 5 = 180,
    20/36 = 20 × 5/36 × 5 = 100/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    10/90 = 10 × 2/90 × 2 = 20/180
  4. Add the two like fractions:
    100/180 + 20/180 = 100 + 20/180 = 120/180
  5. 120/180 simplified gives 2/3
  6. So, 20/36 + 10/90 = 2/3

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