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Add 5/84 and 21/80

5/84 + 21/80 is 541/1680.

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,
    5/84 = 5 × 20/84 × 20 = 100/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    21/80 = 21 × 21/80 × 21 = 441/1680
  4. Add the two like fractions:
    100/1680 + 441/1680 = 100 + 441/1680 = 541/1680
  5. So, 5/84 + 21/80 = 541/1680

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