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Add 5/7 and 21/9

1st number: 5/7, 2nd number: 2 3/9

5/7 + 21/9 is 64/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 9 is 63
  2. For the 1st fraction, since 7 × 9 = 63,
    5/7 = 5 × 9/7 × 9 = 45/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    21/9 = 21 × 7/9 × 7 = 147/63
  4. Add the two fractions:
    45/63 + 147/63 = 45 + 147/63 = 192/63
  5. 192/63 simplified gives 64/21
  6. So, 5/7 + 21/9 = 64/21
    In mixed form: 31/21

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