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Subtract 12/80 from 56/90

56/90 - 12/80 is 17/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    56/90 = 56 × 8/90 × 8 = 448/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    12/80 = 12 × 9/80 × 9 = 108/720
  4. Subtract the two like fractions:
    448/720 - 108/720 = 448 - 108/720 = 340/720
  5. After reducing the fraction, the answer is 17/36

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