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Add 12/80 and 18/72

12/80 + 18/72 is 2/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 72 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    12/80 = 12 × 9/80 × 9 = 108/720
  3. Likewise, for the 2nd fraction, since 72 × 10 = 720,
    18/72 = 18 × 10/72 × 10 = 180/720
  4. Add the two like fractions:
    108/720 + 180/720 = 108 + 180/720 = 288/720
  5. 288/720 simplified gives 2/5
  6. So, 12/80 + 18/72 = 2/5

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