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Add 60/80 and 6/21

60/80 + 6/21 is 29/28.

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,
    60/80 = 60 × 21/80 × 21 = 1260/1680
  3. Likewise, for the 2nd fraction, since 21 × 80 = 1680,
    6/21 = 6 × 80/21 × 80 = 480/1680
  4. Add the two like fractions:
    1260/1680 + 480/1680 = 1260 + 480/1680 = 1740/1680
  5. 1740/1680 simplified gives 29/28
  6. So, 60/80 + 6/21 = 29/28
    In mixed form: 11/28

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