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Subtract 7/9 from 10/70

10/70 - 7/9 is -40/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 9 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 70 × 9 = 630,
    10/70 = 10 × 9/70 × 9 = 90/630
  3. Likewise, for the 2nd fraction, since 9 × 70 = 630,
    7/9 = 7 × 70/9 × 70 = 490/630
  4. Subtract the two like fractions:
    90/630 - 490/630 = 90 - 490/630 = -400/630
  5. After reducing the fraction, the answer is -40/63

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