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Add 18/42 and 12/30

18/42 + 12/30 is 29/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    18/42 = 18 × 5/42 × 5 = 90/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    12/30 = 12 × 7/30 × 7 = 84/210
  4. Add the two like fractions:
    90/210 + 84/210 = 90 + 84/210 = 174/210
  5. 174/210 simplified gives 29/35
  6. So, 18/42 + 12/30 = 29/35

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