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Add 21/28 and 6/7

21/28 + 6/7 is 45/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 7 is 28
  2. For the 1st fraction, since 28 × 1 = 28,
    21/28 = 21 × 1/28 × 1 = 21/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    6/7 = 6 × 4/7 × 4 = 24/28
  4. Add the two fractions:
    21/28 + 24/28 = 21 + 24/28 = 45/28
  5. So, 21/28 + 6/7 = 45/28
    In mixed form: 117/28

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