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Add 1/15 and 15/21

1/15 + 15/21 is 82/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 21 is 105
  2. For the 1st fraction, since 15 × 7 = 105,
    1/15 = 1 × 7/15 × 7 = 7/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    15/21 = 15 × 5/21 × 5 = 75/105
  4. Add the two fractions:
    7/105 + 75/105 = 7 + 75/105 = 82/105

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