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Subtract 54/80 from 90/12

1st number: 7 6/12, 2nd number: 54/80

90/12 - 54/80 is 273/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    54/80 = 54 × 3/80 × 3 = 162/240
  4. Subtract the two like fractions:
    1800/240 - 162/240 = 1800 - 162/240 = 1638/240
  5. After reducing the fraction, the answer is 273/40
  6. In mixed form: 633/40

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