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Add 30/21 and 60/9

1st number: 1 9/21, 2nd number: 6 6/9

30/21 + 60/9 is 170/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 9 is 63
  2. For the 1st fraction, since 21 × 3 = 63,
    30/21 = 30 × 3/21 × 3 = 90/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    60/9 = 60 × 7/9 × 7 = 420/63
  4. Add the two fractions:
    90/63 + 420/63 = 90 + 420/63 = 510/63
  5. After reducing the fraction, the answer is 170/21
  6. In mixed form: 82/21

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