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Add 12/42 and 42/21

1st number: 12/42, 2nd number: 2 0/21

12/42 + 42/21 is 16/7.

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,
    12/42 = 12 × 1/42 × 1 = 12/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    42/21 = 42 × 2/21 × 2 = 84/42
  4. Add the two fractions:
    12/42 + 84/42 = 12 + 84/42 = 96/42
  5. 96/42 simplified gives 16/7
  6. So, 12/42 + 42/21 = 16/7
    In mixed form: 22/7

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