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Subtract 70/63 from 18/7

1st number: 2 4/7, 2nd number: 1 7/63

18/7 - 70/63 is 92/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 63 is 63
  2. For the 1st fraction, since 7 × 9 = 63,
    18/7 = 18 × 9/7 × 9 = 162/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    70/63 = 70 × 1/63 × 1 = 70/63
  4. Subtract the two fractions:
    162/63 - 70/63 = 162 - 70/63 = 92/63
  5. In mixed form: 129/63

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