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Add 12/28 and 42/63

12/28 + 42/63 is 23/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 63 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 28 × 9 = 252,
    12/28 = 12 × 9/28 × 9 = 108/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    42/63 = 42 × 4/63 × 4 = 168/252
  4. Add the two like fractions:
    108/252 + 168/252 = 108 + 168/252 = 276/252
  5. 276/252 simplified gives 23/21
  6. So, 12/28 + 42/63 = 23/21
    In mixed form: 12/21

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