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Add 21/12 and 15/63

1st number: 1 9/12, 2nd number: 15/63

21/12 + 15/63 is 167/84.

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,
    21/12 = 21 × 21/12 × 21 = 441/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    15/63 = 15 × 4/63 × 4 = 60/252
  4. Add the two like fractions:
    441/252 + 60/252 = 441 + 60/252 = 501/252
  5. 501/252 simplified gives 167/84
  6. So, 21/12 + 15/63 = 167/84
    In mixed form: 183/84

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