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Add 3/18 and 3/42

3/18 + 3/42 is 5/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 42 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    3/18 = 3 × 7/18 × 7 = 21/126
  3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
    3/42 = 3 × 3/42 × 3 = 9/126
  4. Add the two fractions:
    21/126 + 9/126 = 21 + 9/126 = 30/126
  5. 30/126 simplified gives 5/21
  6. So, 3/18 + 3/42 = 5/21

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