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Subtract 7/40 from 8/98

8/98 - 7/40 is -183/1960.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 40 is 1960
  2. For the 1st fraction, since 98 × 20 = 1960,
    8/98 = 8 × 20/98 × 20 = 160/1960
  3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
    7/40 = 7 × 49/40 × 49 = 343/1960
  4. Subtract the two fractions:
    160/1960 - 343/1960 = 160 - 343/1960 = -183/1960

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