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Add 21/7 and 6/9

1st number: 3 0/7, 2nd number: 6/9

21/7 + 6/9 is 11/3.

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,
    21/7 = 21 × 9/7 × 9 = 189/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    6/9 = 6 × 7/9 × 7 = 42/63
  4. Add the two like fractions:
    189/63 + 42/63 = 189 + 42/63 = 231/63
  5. 231/63 simplified gives 11/3
  6. So, 21/7 + 6/9 = 11/3
    In mixed form: 32/3

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