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Add 4/7 and 3/9

4/7 + 3/9 is 19/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 7 × 9 = 63,
    4/7 = 4 × 9/7 × 9 = 36/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    3/9 = 3 × 7/9 × 7 = 21/63
  4. Add the two like fractions:
    36/63 + 21/63 = 36 + 21/63 = 57/63
  5. 57/63 simplified gives 19/21
  6. So, 4/7 + 3/9 = 19/21

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