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Add 50/81 and 20/90

50/81 + 20/90 is 68/81.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 90 is 810

    Next, find the equivalent fraction of both fractional numbers with denominator 810
  2. For the 1st fraction, since 81 × 10 = 810,
    50/81 = 50 × 10/81 × 10 = 500/810
  3. Likewise, for the 2nd fraction, since 90 × 9 = 810,
    20/90 = 20 × 9/90 × 9 = 180/810
  4. Add the two like fractions:
    500/810 + 180/810 = 500 + 180/810 = 680/810
  5. 680/810 simplified gives 68/81
  6. So, 50/81 + 20/90 = 68/81

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