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Subtract 35/45 from 6/42

6/42 - 35/45 is -40/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 45 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    6/42 = 6 × 15/42 × 15 = 90/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    35/45 = 35 × 14/45 × 14 = 490/630
  4. Subtract the two fractions:
    90/630 - 490/630 = 90 - 490/630 = -400/630
  5. After reducing the fraction, the answer is -40/63

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