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Subtract 12/70 from 21/25

21/25 - 12/70 is 117/175.

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,
    21/25 = 21 × 14/25 × 14 = 294/350
  3. Likewise, for the 2nd fraction, since 70 × 5 = 350,
    12/70 = 12 × 5/70 × 5 = 60/350
  4. Subtract the two fractions:
    294/350 - 60/350 = 294 - 60/350 = 234/350
  5. After reducing the fraction, the answer is 117/175

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