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Add 8/12 and 1/21

8/12 + 1/21 is 5/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    8/12 = 8 × 7/12 × 7 = 56/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    1/21 = 1 × 4/21 × 4 = 4/84
  4. Add the two like fractions:
    56/84 + 4/84 = 56 + 4/84 = 60/84
  5. 60/84 simplified gives 5/7
  6. So, 8/12 + 1/21 = 5/7

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