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Subtract 25/50 from 30/80

30/80 - 25/50 is -1/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 50 is 400
  2. For the 1st fraction, since 80 × 5 = 400,
    30/80 = 30 × 5/80 × 5 = 150/400
  3. Likewise, for the 2nd fraction, since 50 × 8 = 400,
    25/50 = 25 × 8/50 × 8 = 200/400
  4. Subtract the two fractions:
    150/400 - 200/400 = 150 - 200/400 = -50/400
  5. After reducing the fraction, the answer is -1/8

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