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Add 25/72 and 42/80

25/72 + 42/80 is 157/180.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 72 × 10 = 720,
    25/72 = 25 × 10/72 × 10 = 250/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    42/80 = 42 × 9/80 × 9 = 378/720
  4. Add the two like fractions:
    250/720 + 378/720 = 250 + 378/720 = 628/720
  5. 628/720 simplified gives 157/180
  6. So, 25/72 + 42/80 = 157/180

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