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Add 18/35 and 3/12

18/35 + 3/12 is 107/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 12 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 35 × 12 = 420,
    18/35 = 18 × 12/35 × 12 = 216/420
  3. Likewise, for the 2nd fraction, since 12 × 35 = 420,
    3/12 = 3 × 35/12 × 35 = 105/420
  4. Add the two like fractions:
    216/420 + 105/420 = 216 + 105/420 = 321/420
  5. 321/420 simplified gives 107/140
  6. So, 18/35 + 3/12 = 107/140

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