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Subtract 70/63 from 6/21

1st number: 6/21, 2nd number: 1 7/63

6/21 - 70/63 is -52/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 63 is 63
  2. For the 1st fraction, since 21 × 3 = 63,
    6/21 = 6 × 3/21 × 3 = 18/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    70/63 = 70 × 1/63 × 1 = 70/63
  4. Subtract the two fractions:
    18/63 - 70/63 = 18 - 70/63 = -52/63

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