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Add 3/35 and 8/21

3/35 + 8/21 is 7/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 21 is 105
  2. For the 1st fraction, since 35 × 3 = 105,
    3/35 = 3 × 3/35 × 3 = 9/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    8/21 = 8 × 5/21 × 5 = 40/105
  4. Add the two fractions:
    9/105 + 40/105 = 9 + 40/105 = 49/105
  5. 49/105 simplified gives 7/15
  6. So, 3/35 + 8/21 = 7/15

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