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Add 12/30 and 27/42

12/30 + 27/42 is 73/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 42 is 210
  2. For the 1st fraction, since 30 × 7 = 210,
    12/30 = 12 × 7/30 × 7 = 84/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    27/42 = 27 × 5/42 × 5 = 135/210
  4. Add the two fractions:
    84/210 + 135/210 = 84 + 135/210 = 219/210
  5. 219/210 simplified gives 73/70
  6. So, 12/30 + 27/42 = 73/70
    In mixed form: 13/70

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