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Add 10/21 and 3/5

10/21 + 3/5 is 113/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 5 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    10/21 = 10 × 5/21 × 5 = 50/105
  3. Likewise, for the 2nd fraction, since 5 × 21 = 105,
    3/5 = 3 × 21/5 × 21 = 63/105
  4. Add the two like fractions:
    50/105 + 63/105 = 50 + 63/105 = 113/105
  5. So, 10/21 + 3/5 = 113/105
    In mixed form: 18/105

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