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Subtract 25/42 from 10/8

1st number: 1 2/8, 2nd number: 25/42

10/8 - 25/42 is 55/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 42 is 168
  2. For the 1st fraction, since 8 × 21 = 168,
    10/8 = 10 × 21/8 × 21 = 210/168
  3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
    25/42 = 25 × 4/42 × 4 = 100/168
  4. Subtract the two fractions:
    210/168 - 100/168 = 210 - 100/168 = 110/168
  5. After reducing the fraction, the answer is 55/84

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