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Add 4/40 and 25/81

4/40 + 25/81 is 331/810.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 81 is 3240

    Next, find the equivalent fraction of both fractional numbers with denominator 3240
  2. For the 1st fraction, since 40 × 81 = 3240,
    4/40 = 4 × 81/40 × 81 = 324/3240
  3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
    25/81 = 25 × 40/81 × 40 = 1000/3240
  4. Add the two like fractions:
    324/3240 + 1000/3240 = 324 + 1000/3240 = 1324/3240
  5. 1324/3240 simplified gives 331/810
  6. So, 4/40 + 25/81 = 331/810

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