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Add 20/36 and 25/80

20/36 + 25/80 is 125/144.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 36 × 20 = 720,
    20/36 = 20 × 20/36 × 20 = 400/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    25/80 = 25 × 9/80 × 9 = 225/720
  4. Add the two like fractions:
    400/720 + 225/720 = 400 + 225/720 = 625/720
  5. 625/720 simplified gives 125/144
  6. So, 20/36 + 25/80 = 125/144

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