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Add 21/45 and 6/9

21/45 + 6/9 is 17/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 9 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 45 × 1 = 45,
    21/45 = 21 × 1/45 × 1 = 21/45
  3. Likewise, for the 2nd fraction, since 9 × 5 = 45,
    6/9 = 6 × 5/9 × 5 = 30/45
  4. Add the two like fractions:
    21/45 + 30/45 = 21 + 30/45 = 51/45
  5. 51/45 simplified gives 17/15
  6. So, 21/45 + 6/9 = 17/15
    In mixed form: 12/15

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