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Add 40/81 and 10/80

40/81 + 10/80 is 401/648.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 80 is 6480

    Next, find the equivalent fraction of both fractional numbers with denominator 6480
  2. For the 1st fraction, since 81 × 80 = 6480,
    40/81 = 40 × 80/81 × 80 = 3200/6480
  3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
    10/80 = 10 × 81/80 × 81 = 810/6480
  4. Add the two like fractions:
    3200/6480 + 810/6480 = 3200 + 810/6480 = 4010/6480
  5. 4010/6480 simplified gives 401/648
  6. So, 40/81 + 10/80 = 401/648

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