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Add 7/84 and 56/81

7/84 + 56/81 is 251/324.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 81 is 2268
  2. For the 1st fraction, since 84 × 27 = 2268,
    7/84 = 7 × 27/84 × 27 = 189/2268
  3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
    56/81 = 56 × 28/81 × 28 = 1568/2268
  4. Add the two fractions:
    189/2268 + 1568/2268 = 189 + 1568/2268 = 1757/2268
  5. 1757/2268 simplified gives 251/324
  6. So, 7/84 + 56/81 = 251/324

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