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Add 63/84 and 27/40

63/84 + 27/40 is 57/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 84 × 10 = 840,
    63/84 = 63 × 10/84 × 10 = 630/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    27/40 = 27 × 21/40 × 21 = 567/840
  4. Add the two like fractions:
    630/840 + 567/840 = 630 + 567/840 = 1197/840
  5. 1197/840 simplified gives 57/40
  6. So, 63/84 + 27/40 = 57/40
    In mixed form: 117/40

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