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Subtract 80/7 from 70/63

1st number: 1 7/63, 2nd number: 11 3/7

70/63 - 80/7 is -650/63.

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,
    70/63 = 70 × 1/63 × 1 = 70/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    80/7 = 80 × 9/7 × 9 = 720/63
  4. Subtract the two fractions:
    70/63 - 720/63 = 70 - 720/63 = -650/63

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