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Subtract 6/63 from 8/90

8/90 - 6/63 is -2/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 63 is 630
  2. For the 1st fraction, since 90 × 7 = 630,
    8/90 = 8 × 7/90 × 7 = 56/630
  3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
    6/63 = 6 × 10/63 × 10 = 60/630
  4. Subtract the two fractions:
    56/630 - 60/630 = 56 - 60/630 = -4/630
  5. After reducing the fraction, the answer is -2/315

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