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Subtract 7/54 from 90/80

1st number: 1 10/80, 2nd number: 7/54

90/80 - 7/54 is 215/216.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 54 is 2160

    Next, find the equivalent fraction of both fractional numbers with denominator 2160
  2. For the 1st fraction, since 80 × 27 = 2160,
    90/80 = 90 × 27/80 × 27 = 2430/2160
  3. Likewise, for the 2nd fraction, since 54 × 40 = 2160,
    7/54 = 7 × 40/54 × 40 = 280/2160
  4. Subtract the two like fractions:
    2430/2160 - 280/2160 = 2430 - 280/2160 = 2150/2160
  5. After reducing the fraction, the answer is 215/216

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