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Add 6/21 and 12/30

6/21 + 12/30 is 24/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210
  2. For the 1st fraction, since 21 × 10 = 210,
    6/21 = 6 × 10/21 × 10 = 60/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    12/30 = 12 × 7/30 × 7 = 84/210
  4. Add the two fractions:
    60/210 + 84/210 = 60 + 84/210 = 144/210
  5. After reducing the fraction, the answer is 24/35

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