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Subtract 3/28 from 7/80

7/80 - 3/28 is -11/560.

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,
    7/80 = 7 × 7/80 × 7 = 49/560
  3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
    3/28 = 3 × 20/28 × 20 = 60/560
  4. Subtract the two like fractions:
    49/560 - 60/560 = 49 - 60/560 = -11/560

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