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Subtract 8/7 from 42/2

1st number: 21 0/2, 2nd number: 1 1/7

42/2 - 8/7 is 139/7.

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,
    42/2 = 42 × 7/2 × 7 = 294/14
  3. Likewise, for the 2nd fraction, since 7 × 2 = 14,
    8/7 = 8 × 2/7 × 2 = 16/14
  4. Subtract the two fractions:
    294/14 - 16/14 = 294 - 16/14 = 278/14
  5. After reducing the fraction, the answer is 139/7
  6. In mixed form: 196/7

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