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Add 3/80 and 16/90

3/80 + 16/90 is 31/144.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 90 is 720
  2. For the 1st fraction, since 80 × 9 = 720,
    3/80 = 3 × 9/80 × 9 = 27/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    16/90 = 16 × 8/90 × 8 = 128/720
  4. Add the two fractions:
    27/720 + 128/720 = 27 + 128/720 = 155/720
  5. After reducing the fraction, the answer is 31/144

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