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Add 15/18 and 63/84

15/18 + 63/84 is 19/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 84 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 18 × 14 = 252,
    15/18 = 15 × 14/18 × 14 = 210/252
  3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
    63/84 = 63 × 3/84 × 3 = 189/252
  4. Add the two like fractions:
    210/252 + 189/252 = 210 + 189/252 = 399/252
  5. 399/252 simplified gives 19/12
  6. So, 15/18 + 63/84 = 19/12
    In mixed form: 17/12

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