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Subtract 40/21 from 70/8

1st number: 8 6/8, 2nd number: 1 19/21

70/8 - 40/21 is 575/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168
  2. For the 1st fraction, since 8 × 21 = 168,
    70/8 = 70 × 21/8 × 21 = 1470/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    40/21 = 40 × 8/21 × 8 = 320/168
  4. Subtract the two fractions:
    1470/168 - 320/168 = 1470 - 320/168 = 1150/168
  5. After reducing the fraction, the answer is 575/84
  6. In mixed form: 671/84

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