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Subtract 2/8 from 25/42

25/42 - 2/8 is 29/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 8 is 168
  2. For the 1st fraction, since 42 × 4 = 168,
    25/42 = 25 × 4/42 × 4 = 100/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    2/8 = 2 × 21/8 × 21 = 42/168
  4. Subtract the two fractions:
    100/168 - 42/168 = 100 - 42/168 = 58/168
  5. After reducing the fraction, the answer is 29/84

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