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Add 12/30 and 35/21

1st number: 12/30, 2nd number: 1 14/21

12/30 + 35/21 is 31/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 21 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    12/30 = 12 × 7/30 × 7 = 84/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    35/21 = 35 × 10/21 × 10 = 350/210
  4. Add the two like fractions:
    84/210 + 350/210 = 84 + 350/210 = 434/210
  5. 434/210 simplified gives 31/15
  6. So, 12/30 + 35/21 = 31/15
    In mixed form: 21/15

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