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Subtract 81/80 from 50/60

1st number: 50/60, 2nd number: 1 1/80

50/60 - 81/80 is -43/240.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 80 is 240
  2. For the 1st fraction, since 60 × 4 = 240,
    50/60 = 50 × 4/60 × 4 = 200/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    81/80 = 81 × 3/80 × 3 = 243/240
  4. Subtract the two fractions:
    200/240 - 243/240 = 200 - 243/240 = -43/240

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