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Add 90/80 and 5/81

1st number: 1 10/80, 2nd number: 5/81

90/80 + 5/81 is 769/648.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 81 is 6480
  2. For the 1st fraction, since 80 × 81 = 6480,
    90/80 = 90 × 81/80 × 81 = 7290/6480
  3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
    5/81 = 5 × 80/81 × 80 = 400/6480
  4. Add the two fractions:
    7290/6480 + 400/6480 = 7290 + 400/6480 = 7690/6480
  5. 7690/6480 simplified gives 769/648
  6. So, 90/80 + 5/81 = 769/648
    In mixed form: 1121/648

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