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Add 3/80 and 4/21

3/80 + 4/21 is 383/1680.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 21 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 80 × 21 = 1680,
    3/80 = 3 × 21/80 × 21 = 63/1680
  3. Likewise, for the 2nd fraction, since 21 × 80 = 1680,
    4/21 = 4 × 80/21 × 80 = 320/1680
  4. Add the two like fractions:
    63/1680 + 320/1680 = 63 + 320/1680 = 383/1680
  5. So, 3/80 + 4/21 = 383/1680

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