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Add 3/30 and 7/21

3/30 + 7/21 is 13/30.

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,
    3/30 = 3 × 7/30 × 7 = 21/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    7/21 = 7 × 10/21 × 10 = 70/210
  4. Add the two like fractions:
    21/210 + 70/210 = 21 + 70/210 = 91/210
  5. 91/210 simplified gives 13/30
  6. So, 3/30 + 7/21 = 13/30

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