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Add 25/80 and 42/90

25/80 + 42/90 is 187/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 90 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 90 × 8 = 720,
    42/90 = 42 × 8/90 × 8 = 336/720
  4. Add the two like fractions:
    225/720 + 336/720 = 225 + 336/720 = 561/720
  5. 561/720 simplified gives 187/240
  6. So, 25/80 + 42/90 = 187/240

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