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Add 3/21 and 15/7

1st number: 3/21, 2nd number: 2 1/7

3/21 + 15/7 is 16/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 7 is 21

    Next, find the equivalent fraction of both fractional numbers with denominator 21
  2. For the 1st fraction, since 21 × 1 = 21,
    3/21 = 3 × 1/21 × 1 = 3/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    15/7 = 15 × 3/7 × 3 = 45/21
  4. Add the two like fractions:
    3/21 + 45/21 = 3 + 45/21 = 48/21
  5. 48/21 simplified gives 16/7
  6. So, 3/21 + 15/7 = 16/7
    In mixed form: 22/7

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