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Add 7/28 and 6/21

7/28 + 6/21 is 15/28.

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,
    7/28 = 7 × 3/28 × 3 = 21/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    6/21 = 6 × 4/21 × 4 = 24/84
  4. Add the two fractions:
    21/84 + 24/84 = 21 + 24/84 = 45/84
  5. After reducing the fraction, the answer is 15/28

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