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Subtract 21/7 from 7/25

1st number: 7/25, 2nd number: 3 0/7

7/25 - 21/7 is -68/25.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 7 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 7 × 25 = 175,
    21/7 = 21 × 25/7 × 25 = 525/175
  4. Subtract the two fractions:
    49/175 - 525/175 = 49 - 525/175 = -476/175
  5. After reducing the fraction, the answer is -68/25

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