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Subtract 42/45 from 4/6

4/6 - 42/45 is -4/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 45 is 90
  2. For the 1st fraction, since 6 × 15 = 90,
    4/6 = 4 × 15/6 × 15 = 60/90
  3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
    42/45 = 42 × 2/45 × 2 = 84/90
  4. Subtract the two fractions:
    60/90 - 84/90 = 60 - 84/90 = -24/90
  5. After reducing the fraction, the answer is -4/15

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