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Subtract 70/80 from 8/28

8/28 - 70/80 is -33/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 80 is 560
  2. For the 1st fraction, since 28 × 20 = 560,
    8/28 = 8 × 20/28 × 20 = 160/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    70/80 = 70 × 7/80 × 7 = 490/560
  4. Subtract the two fractions:
    160/560 - 490/560 = 160 - 490/560 = -330/560
  5. After reducing the fraction, the answer is -33/56

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