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Subtract 40/7 from 20/63

1st number: 20/63, 2nd number: 5 5/7

20/63 - 40/7 is -340/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 7 is 63
  2. For the 1st fraction, since 63 × 1 = 63,
    20/63 = 20 × 1/63 × 1 = 20/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    40/7 = 40 × 9/7 × 9 = 360/63
  4. Subtract the two fractions:
    20/63 - 360/63 = 20 - 360/63 = -340/63

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