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Add 28/84 and 14/80

28/84 + 14/80 is 61/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 80 is 1680
  2. For the 1st fraction, since 84 × 20 = 1680,
    28/84 = 28 × 20/84 × 20 = 560/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    14/80 = 14 × 21/80 × 21 = 294/1680
  4. Add the two fractions:
    560/1680 + 294/1680 = 560 + 294/1680 = 854/1680
  5. 854/1680 simplified gives 61/120
  6. So, 28/84 + 14/80 = 61/120

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