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Add 12/21 and 2/4

12/21 + 2/4 is 15/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 4 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    12/21 = 12 × 4/21 × 4 = 48/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    2/4 = 2 × 21/4 × 21 = 42/84
  4. Add the two like fractions:
    48/84 + 42/84 = 48 + 42/84 = 90/84
  5. 90/84 simplified gives 15/14
  6. So, 12/21 + 2/4 = 15/14
    In mixed form: 11/14

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