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Subtract 10/63 from 20/18

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

20/18 - 10/63 is 20/21.

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,
    20/18 = 20 × 7/18 × 7 = 140/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    10/63 = 10 × 2/63 × 2 = 20/126
  4. Subtract the two fractions:
    140/126 - 20/126 = 140 - 20/126 = 120/126
  5. After reducing the fraction, the answer is 20/21

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