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Add 6/8 and 9/21

6/8 + 9/21 is 33/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    6/8 = 6 × 21/8 × 21 = 126/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    9/21 = 9 × 8/21 × 8 = 72/168
  4. Add the two like fractions:
    126/168 + 72/168 = 126 + 72/168 = 198/168
  5. 198/168 simplified gives 33/28
  6. So, 6/8 + 9/21 = 33/28
    In mixed form: 15/28

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