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Subtract 8/42 from 3/5

3/5 - 8/42 is 43/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 42 is 210
  2. For the 1st fraction, since 5 × 42 = 210,
    3/5 = 3 × 42/5 × 42 = 126/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    8/42 = 8 × 5/42 × 5 = 40/210
  4. Subtract the two fractions:
    126/210 - 40/210 = 126 - 40/210 = 86/210
  5. After reducing the fraction, the answer is 43/105

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