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Subtract 90/80 from 56/45

1st number: 1 11/45, 2nd number: 1 10/80

56/45 - 90/80 is 43/360.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 80 is 720
  2. For the 1st fraction, since 45 × 16 = 720,
    56/45 = 56 × 16/45 × 16 = 896/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    90/80 = 90 × 9/80 × 9 = 810/720
  4. Subtract the two fractions:
    896/720 - 810/720 = 896 - 810/720 = 86/720
  5. After reducing the fraction, the answer is 43/360

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