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Add 18/80 and 5/12

18/80 + 5/12 is 77/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 12 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 80 × 3 = 240,
    18/80 = 18 × 3/80 × 3 = 54/240
  3. Likewise, for the 2nd fraction, since 12 × 20 = 240,
    5/12 = 5 × 20/12 × 20 = 100/240
  4. Add the two like fractions:
    54/240 + 100/240 = 54 + 100/240 = 154/240
  5. 154/240 simplified gives 77/120
  6. So, 18/80 + 5/12 = 77/120

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