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Add 8/12 and 18/63

8/12 + 18/63 is 20/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 63 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 12 × 21 = 252,
    8/12 = 8 × 21/12 × 21 = 168/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    18/63 = 18 × 4/63 × 4 = 72/252
  4. Add the two like fractions:
    168/252 + 72/252 = 168 + 72/252 = 240/252
  5. 240/252 simplified gives 20/21
  6. So, 8/12 + 18/63 = 20/21

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