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Add 25/80 and 20/72

25/80 + 20/72 is 85/144.

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,
    25/80 = 25 × 9/80 × 9 = 225/720
  3. Likewise, for the 2nd fraction, since 72 × 10 = 720,
    20/72 = 20 × 10/72 × 10 = 200/720
  4. Add the two like fractions:
    225/720 + 200/720 = 225 + 200/720 = 425/720
  5. 425/720 simplified gives 85/144
  6. So, 25/80 + 20/72 = 85/144

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