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Subtract 30/28 from 1/80

1st number: 1/80, 2nd number: 1 2/28

1/80 - 30/28 is -593/560.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 28 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    1/80 = 1 × 7/80 × 7 = 7/560
  3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
    30/28 = 30 × 20/28 × 20 = 600/560
  4. Subtract the two like fractions:
    7/560 - 600/560 = 7 - 600/560 = -593/560

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