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Subtract 18/15 from 20/98

1st number: 20/98, 2nd number: 1 3/15

20/98 - 18/15 is -244/245.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 15 is 1470

    Next, find the equivalent fraction of both fractional numbers with denominator 1470
  2. For the 1st fraction, since 98 × 15 = 1470,
    20/98 = 20 × 15/98 × 15 = 300/1470
  3. Likewise, for the 2nd fraction, since 15 × 98 = 1470,
    18/15 = 18 × 98/15 × 98 = 1764/1470
  4. Subtract the two like fractions:
    300/1470 - 1764/1470 = 300 - 1764/1470 = -1464/1470
  5. After reducing the fraction, the answer is -244/245

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