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Subtract 45/20 from 50/45

1st number: 1 5/45, 2nd number: 2 5/20

50/45 - 45/20 is -41/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    50/45 = 50 × 4/45 × 4 = 200/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    45/20 = 45 × 9/20 × 9 = 405/180
  4. Subtract the two like fractions:
    200/180 - 405/180 = 200 - 405/180 = -205/180
  5. After reducing the fraction, the answer is -41/36

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