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Subtract 70/63 from 10/18

1st number: 10/18, 2nd number: 1 7/63

10/18 - 70/63 is -5/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 63 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    10/18 = 10 × 7/18 × 7 = 70/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    70/63 = 70 × 2/63 × 2 = 140/126
  4. Subtract the two fractions:
    70/126 - 140/126 = 70 - 140/126 = -70/126
  5. After reducing the fraction, the answer is -5/9

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