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Subtract 75/18 from 7/45

1st number: 7/45, 2nd number: 4 3/18

7/45 - 75/18 is -361/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 45 × 2 = 90,
    7/45 = 7 × 2/45 × 2 = 14/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    75/18 = 75 × 5/18 × 5 = 375/90
  4. Subtract the two like fractions:
    14/90 - 375/90 = 14 - 375/90 = -361/90

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