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Add 1/9 and 15/21

1/9 + 15/21 is 52/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 21 is 63
  2. For the 1st fraction, since 9 × 7 = 63,
    1/9 = 1 × 7/9 × 7 = 7/63
  3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
    15/21 = 15 × 3/21 × 3 = 45/63
  4. Add the two fractions:
    7/63 + 45/63 = 7 + 45/63 = 52/63

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