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Add 45/84 and 54/80

45/84 + 54/80 is 339/280.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 84 × 20 = 1680,
    45/84 = 45 × 20/84 × 20 = 900/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    54/80 = 54 × 21/80 × 21 = 1134/1680
  4. Add the two like fractions:
    900/1680 + 1134/1680 = 900 + 1134/1680 = 2034/1680
  5. 2034/1680 simplified gives 339/280
  6. So, 45/84 + 54/80 = 339/280
    In mixed form: 159/280

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