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Add 18/80 and 15/84

18/80 + 15/84 is 113/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 84 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 80 × 21 = 1680,
    18/80 = 18 × 21/80 × 21 = 378/1680
  3. Likewise, for the 2nd fraction, since 84 × 20 = 1680,
    15/84 = 15 × 20/84 × 20 = 300/1680
  4. Add the two like fractions:
    378/1680 + 300/1680 = 378 + 300/1680 = 678/1680
  5. 678/1680 simplified gives 113/280
  6. So, 18/80 + 15/84 = 113/280

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