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Add 7/42 and 18/21

7/42 + 18/21 is 43/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 21 is 42
  2. For the 1st fraction, since 42 × 1 = 42,
    7/42 = 7 × 1/42 × 1 = 7/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    18/21 = 18 × 2/21 × 2 = 36/42
  4. Add the two fractions:
    7/42 + 36/42 = 7 + 36/42 = 43/42
  5. So, 7/42 + 18/21 = 43/42
    In mixed form: 11/42

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