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Add 40/81 and 63/90

40/81 + 63/90 is 967/810.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 90 is 810
  2. For the 1st fraction, since 81 × 10 = 810,
    40/81 = 40 × 10/81 × 10 = 400/810
  3. Likewise, for the 2nd fraction, since 90 × 9 = 810,
    63/90 = 63 × 9/90 × 9 = 567/810
  4. Add the two fractions:
    400/810 + 567/810 = 400 + 567/810 = 967/810
  5. In mixed form: 1157/810

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