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Add 16/21 and 4/10

16/21 + 4/10 is 122/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    16/21 = 16 × 10/21 × 10 = 160/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    4/10 = 4 × 21/10 × 21 = 84/210
  4. Add the two like fractions:
    160/210 + 84/210 = 160 + 84/210 = 244/210
  5. 244/210 simplified gives 122/105
  6. So, 16/21 + 4/10 = 122/105
    In mixed form: 117/105

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