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Add 3/15 and 3/90

3/15 + 3/90 is 7/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 90 is 90
  2. For the 1st fraction, since 15 × 6 = 90,
    3/15 = 3 × 6/15 × 6 = 18/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    3/90 = 3 × 1/90 × 1 = 3/90
  4. Add the two fractions:
    18/90 + 3/90 = 18 + 3/90 = 21/90
  5. After reducing the fraction, the answer is 7/30

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