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Add 36/80 and 18/21

36/80 + 18/21 is 183/140.

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,
    36/80 = 36 × 21/80 × 21 = 756/1680
  3. Likewise, for the 2nd fraction, since 21 × 80 = 1680,
    18/21 = 18 × 80/21 × 80 = 1440/1680
  4. Add the two like fractions:
    756/1680 + 1440/1680 = 756 + 1440/1680 = 2196/1680
  5. 2196/1680 simplified gives 183/140
  6. So, 36/80 + 18/21 = 183/140
    In mixed form: 143/140

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