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Subtract 9/10 from 7/25

7/25 - 9/10 is -31/50.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 10 is 50
  2. For the 1st fraction, since 25 × 2 = 50,
    7/25 = 7 × 2/25 × 2 = 14/50
  3. Likewise, for the 2nd fraction, since 10 × 5 = 50,
    9/10 = 9 × 5/10 × 5 = 45/50
  4. Subtract the two fractions:
    14/50 - 45/50 = 14 - 45/50 = -31/50

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