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Subtract 10/7 from 10/90

1st number: 10/90, 2nd number: 1 3/7

10/90 - 10/7 is -83/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 7 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    10/90 = 10 × 7/90 × 7 = 70/630
  3. Likewise, for the 2nd fraction, since 7 × 90 = 630,
    10/7 = 10 × 90/7 × 90 = 900/630
  4. Subtract the two like fractions:
    70/630 - 900/630 = 70 - 900/630 = -830/630
  5. After reducing the fraction, the answer is -83/63

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