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Add 5/15 and 15/21

5/15 + 15/21 is 22/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    5/15 = 5 × 7/15 × 7 = 35/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    15/21 = 15 × 5/21 × 5 = 75/105
  4. Add the two like fractions:
    35/105 + 75/105 = 35 + 75/105 = 110/105
  5. 110/105 simplified gives 22/21
  6. So, 5/15 + 15/21 = 22/21
    In mixed form: 11/21

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