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Add 4/12 and 10/21

4/12 + 10/21 is 17/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    4/12 = 4 × 7/12 × 7 = 28/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    10/21 = 10 × 4/21 × 4 = 40/84
  4. Add the two like fractions:
    28/84 + 40/84 = 28 + 40/84 = 68/84
  5. 68/84 simplified gives 17/21
  6. So, 4/12 + 10/21 = 17/21

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