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Add 18/42 and 4/12

18/42 + 4/12 is 16/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 12 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 42 × 2 = 84,
    18/42 = 18 × 2/42 × 2 = 36/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    4/12 = 4 × 7/12 × 7 = 28/84
  4. Add the two like fractions:
    36/84 + 28/84 = 36 + 28/84 = 64/84
  5. 64/84 simplified gives 16/21
  6. So, 18/42 + 4/12 = 16/21

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