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Subtract 5/9 from 30/70

30/70 - 5/9 is -8/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 9 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    30/70 = 30 × 9/70 × 9 = 270/630
  3. Likewise, for the 2nd fraction, since 9 × 70 = 630,
    5/9 = 5 × 70/9 × 70 = 350/630
  4. Subtract the two fractions:
    270/630 - 350/630 = 270 - 350/630 = -80/630
  5. After reducing the fraction, the answer is -8/63

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