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Subtract 49/18 from 45/80

1st number: 45/80, 2nd number: 2 13/18

45/80 - 49/18 is -311/144.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 18 is 720
  2. For the 1st fraction, since 80 × 9 = 720,
    45/80 = 45 × 9/80 × 9 = 405/720
  3. Likewise, for the 2nd fraction, since 18 × 40 = 720,
    49/18 = 49 × 40/18 × 40 = 1960/720
  4. Subtract the two fractions:
    405/720 - 1960/720 = 405 - 1960/720 = -1555/720
  5. After reducing the fraction, the answer is -311/144

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