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Subtract 70/90 from 6/70

6/70 - 70/90 is -218/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 90 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    6/70 = 6 × 9/70 × 9 = 54/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    70/90 = 70 × 7/90 × 7 = 490/630
  4. Subtract the two fractions:
    54/630 - 490/630 = 54 - 490/630 = -436/630
  5. After reducing the fraction, the answer is -218/315

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