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Subtract 40/70 from 3/25

3/25 - 40/70 is -79/175.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 70 is 350
  2. For the 1st fraction, since 25 × 14 = 350,
    3/25 = 3 × 14/25 × 14 = 42/350
  3. Likewise, for the 2nd fraction, since 70 × 5 = 350,
    40/70 = 40 × 5/70 × 5 = 200/350
  4. Subtract the two fractions:
    42/350 - 200/350 = 42 - 200/350 = -158/350
  5. After reducing the fraction, the answer is -79/175

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