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Add 7/30 and 7/21

7/30 + 7/21 is 17/30.

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,
    7/30 = 7 × 7/30 × 7 = 49/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    7/21 = 7 × 10/21 × 10 = 70/210
  4. Add the two like fractions:
    49/210 + 70/210 = 49 + 70/210 = 119/210
  5. 119/210 simplified gives 17/30
  6. So, 7/30 + 7/21 = 17/30

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