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Subtract 80/98 from 20/30

20/30 - 80/98 is -22/147.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 98 is 1470

    Next, find the equivalent fraction of both fractional numbers with denominator 1470
  2. For the 1st fraction, since 30 × 49 = 1470,
    20/30 = 20 × 49/30 × 49 = 980/1470
  3. Likewise, for the 2nd fraction, since 98 × 15 = 1470,
    80/98 = 80 × 15/98 × 15 = 1200/1470
  4. Subtract the two like fractions:
    980/1470 - 1200/1470 = 980 - 1200/1470 = -220/1470
  5. After reducing the fraction, the answer is -22/147

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