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Add 63/84 and 54/70

63/84 + 54/70 is 213/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 70 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 70 × 6 = 420,
    54/70 = 54 × 6/70 × 6 = 324/420
  4. Add the two fractions:
    315/420 + 324/420 = 315 + 324/420 = 639/420
  5. 639/420 simplified gives 213/140
  6. So, 63/84 + 54/70 = 213/140
    In mixed form: 173/140

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