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Subtract 4/70 from 1/63

1/63 - 4/70 is -13/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 70 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 63 × 10 = 630,
    1/63 = 1 × 10/63 × 10 = 10/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    4/70 = 4 × 9/70 × 9 = 36/630
  4. Subtract the two like fractions:
    10/630 - 36/630 = 10 - 36/630 = -26/630
  5. After reducing the fraction, the answer is -13/315

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