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Subtract 45/70 from 8/24

8/24 - 45/70 is -13/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 70 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 24 × 35 = 840,
    8/24 = 8 × 35/24 × 35 = 280/840
  3. Likewise, for the 2nd fraction, since 70 × 12 = 840,
    45/70 = 45 × 12/70 × 12 = 540/840
  4. Subtract the two like fractions:
    280/840 - 540/840 = 280 - 540/840 = -260/840
  5. After reducing the fraction, the answer is -13/42

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