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Add 81/90 and 5/16

81/90 + 5/16 is 97/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 16 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    81/90 = 81 × 8/90 × 8 = 648/720
  3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
    5/16 = 5 × 45/16 × 45 = 225/720
  4. Add the two like fractions:
    648/720 + 225/720 = 648 + 225/720 = 873/720
  5. 873/720 simplified gives 97/80
  6. So, 81/90 + 5/16 = 97/80
    In mixed form: 117/80

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