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Add 12/30 and 18/84

12/30 + 18/84 is 43/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 30 × 14 = 420,
    12/30 = 12 × 14/30 × 14 = 168/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    18/84 = 18 × 5/84 × 5 = 90/420
  4. Add the two like fractions:
    168/420 + 90/420 = 168 + 90/420 = 258/420
  5. 258/420 simplified gives 43/70
  6. So, 12/30 + 18/84 = 43/70

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