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Subtract 21/35 from 7/25

7/25 - 21/35 is -8/25.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 35 is 175
  2. For the 1st fraction, since 25 × 7 = 175,
    7/25 = 7 × 7/25 × 7 = 49/175
  3. Likewise, for the 2nd fraction, since 35 × 5 = 175,
    21/35 = 21 × 5/35 × 5 = 105/175
  4. Subtract the two fractions:
    49/175 - 105/175 = 49 - 105/175 = -56/175
  5. After reducing the fraction, the answer is -8/25

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