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Subtract 84/40 from 64/98

1st number: 64/98, 2nd number: 2 4/40

64/98 - 84/40 is -709/490.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 40 is 1960

    Next, find the equivalent fraction of both fractional numbers with denominator 1960
  2. For the 1st fraction, since 98 × 20 = 1960,
    64/98 = 64 × 20/98 × 20 = 1280/1960
  3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
    84/40 = 84 × 49/40 × 49 = 4116/1960
  4. Subtract the two like fractions:
    1280/1960 - 4116/1960 = 1280 - 4116/1960 = -2836/1960
  5. After reducing the fraction, the answer is -709/490

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