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Add 3/12 and 30/21

1st number: 3/12, 2nd number: 1 9/21

3/12 + 30/21 is 47/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84
  2. For the 1st fraction, since 12 × 7 = 84,
    3/12 = 3 × 7/12 × 7 = 21/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    30/21 = 30 × 4/21 × 4 = 120/84
  4. Add the two fractions:
    21/84 + 120/84 = 21 + 120/84 = 141/84
  5. After reducing the fraction, the answer is 47/28
  6. In mixed form: 119/28

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