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Add 25/90 and 42/80

25/90 + 42/80 is 289/360.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    25/90 = 25 × 8/90 × 8 = 200/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    42/80 = 42 × 9/80 × 9 = 378/720
  4. Add the two like fractions:
    200/720 + 378/720 = 200 + 378/720 = 578/720
  5. 578/720 simplified gives 289/360
  6. So, 25/90 + 42/80 = 289/360

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