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Add 8/28 and 6/21

8/28 + 6/21 is 4/7.

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,
    8/28 = 8 × 3/28 × 3 = 24/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    6/21 = 6 × 4/21 × 4 = 24/84
  4. Add the two fractions:
    24/84 + 24/84 = 24 + 24/84 = 48/84
  5. 48/84 simplified gives 4/7
  6. So, 8/28 + 6/21 = 4/7

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