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Add 56/63 and 21/81

56/63 + 21/81 is 31/27.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 81 is 567

    Next, find the equivalent fraction of both fractional numbers with denominator 567
  2. For the 1st fraction, since 63 × 9 = 567,
    56/63 = 56 × 9/63 × 9 = 504/567
  3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
    21/81 = 21 × 7/81 × 7 = 147/567
  4. Add the two like fractions:
    504/567 + 147/567 = 504 + 147/567 = 651/567
  5. 651/567 simplified gives 31/27
  6. So, 56/63 + 21/81 = 31/27
    In mixed form: 14/27

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