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Subtract 4/80 from 28/84

28/84 - 4/80 is 17/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 80 is 1680
  2. For the 1st fraction, since 84 × 20 = 1680,
    28/84 = 28 × 20/84 × 20 = 560/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    4/80 = 4 × 21/80 × 21 = 84/1680
  4. Subtract the two fractions:
    560/1680 - 84/1680 = 560 - 84/1680 = 476/1680
  5. After reducing the fraction, the answer is 17/60

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