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Add 21/35 and 4/81

21/35 + 4/81 is 263/405.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 81 is 2835

    Next, find the equivalent fraction of both fractional numbers with denominator 2835
  2. For the 1st fraction, since 35 × 81 = 2835,
    21/35 = 21 × 81/35 × 81 = 1701/2835
  3. Likewise, for the 2nd fraction, since 81 × 35 = 2835,
    4/81 = 4 × 35/81 × 35 = 140/2835
  4. Add the two like fractions:
    1701/2835 + 140/2835 = 1701 + 140/2835 = 1841/2835
  5. 1841/2835 simplified gives 263/405
  6. So, 21/35 + 4/81 = 263/405

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