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Subtract 8/7 from 21/2

1st number: 10 1/2, 2nd number: 1 1/7

21/2 - 8/7 is 131/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 7 is 14
  2. For the 1st fraction, since 2 × 7 = 14,
    21/2 = 21 × 7/2 × 7 = 147/14
  3. Likewise, for the 2nd fraction, since 7 × 2 = 14,
    8/7 = 8 × 2/7 × 2 = 16/14
  4. Subtract the two fractions:
    147/14 - 16/14 = 147 - 16/14 = 131/14
  5. In mixed form: 95/14

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