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Add 63/84 and 20/60

63/84 + 20/60 is 13/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 60 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    63/84 = 63 × 5/84 × 5 = 315/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    20/60 = 20 × 7/60 × 7 = 140/420
  4. Add the two fractions:
    315/420 + 140/420 = 315 + 140/420 = 455/420
  5. 455/420 simplified gives 13/12
  6. So, 63/84 + 20/60 = 13/12
    In mixed form: 11/12

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