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Add 12/42 and 7/30

12/42 + 7/30 is 109/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 30 is 210
  2. For the 1st fraction, since 42 × 5 = 210,
    12/42 = 12 × 5/42 × 5 = 60/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    7/30 = 7 × 7/30 × 7 = 49/210
  4. Add the two fractions:
    60/210 + 49/210 = 60 + 49/210 = 109/210

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