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Add 12/21 and 7/35

12/21 + 7/35 is 27/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 35 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    12/21 = 12 × 5/21 × 5 = 60/105
  3. Likewise, for the 2nd fraction, since 35 × 3 = 105,
    7/35 = 7 × 3/35 × 3 = 21/105
  4. Add the two like fractions:
    60/105 + 21/105 = 60 + 21/105 = 81/105
  5. 81/105 simplified gives 27/35
  6. So, 12/21 + 7/35 = 27/35

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