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Add 28/30 and 9/90

28/30 + 9/90 is 31/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 90 is 90
  2. For the 1st fraction, since 30 × 3 = 90,
    28/30 = 28 × 3/30 × 3 = 84/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    9/90 = 9 × 1/90 × 1 = 9/90
  4. Add the two fractions:
    84/90 + 9/90 = 84 + 9/90 = 93/90
  5. 93/90 simplified gives 31/30
  6. So, 28/30 + 9/90 = 31/30
    In mixed form: 11/30

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