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Subtract 8/12 from 15/70

15/70 - 8/12 is -19/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 12 is 420
  2. For the 1st fraction, since 70 × 6 = 420,
    15/70 = 15 × 6/70 × 6 = 90/420
  3. Likewise, for the 2nd fraction, since 12 × 35 = 420,
    8/12 = 8 × 35/12 × 35 = 280/420
  4. Subtract the two fractions:
    90/420 - 280/420 = 90 - 280/420 = -190/420
  5. After reducing the fraction, the answer is -19/42

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