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Subtract 45/80 from 90/12

1st number: 7 6/12, 2nd number: 45/80

90/12 - 45/80 is 111/16.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 80 is 240
  2. For the 1st fraction, since 12 × 20 = 240,
    90/12 = 90 × 20/12 × 20 = 1800/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    45/80 = 45 × 3/80 × 3 = 135/240
  4. Subtract the two fractions:
    1800/240 - 135/240 = 1800 - 135/240 = 1665/240
  5. After reducing the fraction, the answer is 111/16
  6. In mixed form: 615/16

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