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Subtract 45/7 from 70/9

1st number: 7 7/9, 2nd number: 6 3/7

70/9 - 45/7 is 85/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 7 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 9 × 7 = 63,
    70/9 = 70 × 7/9 × 7 = 490/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    45/7 = 45 × 9/7 × 9 = 405/63
  4. Subtract the two like fractions:
    490/63 - 405/63 = 490 - 405/63 = 85/63
  5. In mixed form: 122/63

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