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Add 12/42 and 10/84

12/42 + 10/84 is 17/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 84 is 84
  2. For the 1st fraction, since 42 × 2 = 84,
    12/42 = 12 × 2/42 × 2 = 24/84
  3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
    10/84 = 10 × 1/84 × 1 = 10/84
  4. Add the two fractions:
    24/84 + 10/84 = 24 + 10/84 = 34/84
  5. After reducing the fraction, the answer is 17/42

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