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Add 12/80 and 5/45

12/80 + 5/45 is 47/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 45 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 45 × 16 = 720,
    5/45 = 5 × 16/45 × 16 = 80/720
  4. Add the two like fractions:
    108/720 + 80/720 = 108 + 80/720 = 188/720
  5. 188/720 simplified gives 47/180
  6. So, 12/80 + 5/45 = 47/180

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