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Subtract 4/10 from 8/63

8/63 - 4/10 is -86/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 10 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 63 × 10 = 630,
    8/63 = 8 × 10/63 × 10 = 80/630
  3. Likewise, for the 2nd fraction, since 10 × 63 = 630,
    4/10 = 4 × 63/10 × 63 = 252/630
  4. Subtract the two like fractions:
    80/630 - 252/630 = 80 - 252/630 = -172/630
  5. After reducing the fraction, the answer is -86/315

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