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Subtract 42/45 from 90/75

1st number: 1 15/75, 2nd number: 42/45

90/75 - 42/45 is 4/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 45 is 225
  2. For the 1st fraction, since 75 × 3 = 225,
    90/75 = 90 × 3/75 × 3 = 270/225
  3. Likewise, for the 2nd fraction, since 45 × 5 = 225,
    42/45 = 42 × 5/45 × 5 = 210/225
  4. Subtract the two fractions:
    270/225 - 210/225 = 270 - 210/225 = 60/225
  5. After reducing the fraction, the answer is 4/15

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