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Subtract 18/30 from 8/70

8/70 - 18/30 is -17/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 70 × 3 = 210,
    8/70 = 8 × 3/70 × 3 = 24/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    18/30 = 18 × 7/30 × 7 = 126/210
  4. Subtract the two like fractions:
    24/210 - 126/210 = 24 - 126/210 = -102/210
  5. After reducing the fraction, the answer is -17/35

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