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Add 1/80 and 2/90

1/80 + 2/90 is 5/144.

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,
    1/80 = 1 × 9/80 × 9 = 9/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    2/90 = 2 × 8/90 × 8 = 16/720
  4. Add the two fractions:
    9/720 + 16/720 = 9 + 16/720 = 25/720
  5. After reducing the fraction, the answer is 5/144

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