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Add 4/28 and 4/21

4/28 + 4/21 is 1/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 21 is 84
  2. For the 1st fraction, since 28 × 3 = 84,
    4/28 = 4 × 3/28 × 3 = 12/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    4/21 = 4 × 4/21 × 4 = 16/84
  4. Add the two fractions:
    12/84 + 16/84 = 12 + 16/84 = 28/84
  5. After reducing the fraction, the answer is 1/3

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