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Subtract 36/40 from 12/70

12/70 - 36/40 is -51/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 70 × 4 = 280,
    12/70 = 12 × 4/70 × 4 = 48/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    36/40 = 36 × 7/40 × 7 = 252/280
  4. Subtract the two like fractions:
    48/280 - 252/280 = 48 - 252/280 = -204/280
  5. After reducing the fraction, the answer is -51/70

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