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Subtract 6/10 from 8/42

8/42 - 6/10 is -43/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 10 is 210
  2. For the 1st fraction, since 42 × 5 = 210,
    8/42 = 8 × 5/42 × 5 = 40/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    6/10 = 6 × 21/10 × 21 = 126/210
  4. Subtract the two fractions:
    40/210 - 126/210 = 40 - 126/210 = -86/210
  5. After reducing the fraction, the answer is -43/105

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