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Add 72/21 and 9/6

1st number: 3 9/21, 2nd number: 1 3/6

72/21 + 9/6 is 69/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 6 is 42
  2. For the 1st fraction, since 21 × 2 = 42,
    72/21 = 72 × 2/21 × 2 = 144/42
  3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
    9/6 = 9 × 7/6 × 7 = 63/42
  4. Add the two fractions:
    144/42 + 63/42 = 144 + 63/42 = 207/42
  5. After reducing the fraction, the answer is 69/14
  6. In mixed form: 413/14

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