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Add 5/21 and 8/35

5/21 + 8/35 is 7/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 35 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    5/21 = 5 × 5/21 × 5 = 25/105
  3. Likewise, for the 2nd fraction, since 35 × 3 = 105,
    8/35 = 8 × 3/35 × 3 = 24/105
  4. Add the two like fractions:
    25/105 + 24/105 = 25 + 24/105 = 49/105
  5. 49/105 simplified gives 7/15
  6. So, 5/21 + 8/35 = 7/15

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