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Subtract 36/80 from 90/50

1st number: 1 40/50, 2nd number: 36/80

90/50 - 36/80 is 27/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 80 is 400

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 50 × 8 = 400,
    90/50 = 90 × 8/50 × 8 = 720/400
  3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
    36/80 = 36 × 5/80 × 5 = 180/400
  4. Subtract the two like fractions:
    720/400 - 180/400 = 720 - 180/400 = 540/400
  5. After reducing the fraction, the answer is 27/20
  6. In mixed form: 17/20

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