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Add 12/3 and 40/7

1st number: 4 0/3, 2nd number: 5 5/7

12/3 + 40/7 is 68/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 7 is 21

    Next, find the equivalent fraction of both fractional numbers with denominator 21
  2. For the 1st fraction, since 3 × 7 = 21,
    12/3 = 12 × 7/3 × 7 = 84/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    40/7 = 40 × 3/7 × 3 = 120/21
  4. Add the two like fractions:
    84/21 + 120/21 = 84 + 120/21 = 204/21
  5. 204/21 simplified gives 68/7
  6. So, 12/3 + 40/7 = 68/7
    In mixed form: 95/7

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