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Add 12/21 and 25/42

12/21 + 25/42 is 7/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 42 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    12/21 = 12 × 2/21 × 2 = 24/42
  3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
    25/42 = 25 × 1/42 × 1 = 25/42
  4. Add the two like fractions:
    24/42 + 25/42 = 24 + 25/42 = 49/42
  5. 49/42 simplified gives 7/6
  6. So, 12/21 + 25/42 = 7/6
    In mixed form: 11/6

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