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Add 21/90 and 1/3

21/90 + 1/3 is 17/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 3 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 90 × 1 = 90,
    21/90 = 21 × 1/90 × 1 = 21/90
  3. Likewise, for the 2nd fraction, since 3 × 30 = 90,
    1/3 = 1 × 30/3 × 30 = 30/90
  4. Add the two like fractions:
    21/90 + 30/90 = 21 + 30/90 = 51/90
  5. 51/90 simplified gives 17/30
  6. So, 21/90 + 1/3 = 17/30

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