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Subtract 90/25 from 18/98

1st number: 18/98, 2nd number: 3 15/25

18/98 - 90/25 is -837/245.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 25 is 2450

    Next, find the equivalent fraction of both fractional numbers with denominator 2450
  2. For the 1st fraction, since 98 × 25 = 2450,
    18/98 = 18 × 25/98 × 25 = 450/2450
  3. Likewise, for the 2nd fraction, since 25 × 98 = 2450,
    90/25 = 90 × 98/25 × 98 = 8820/2450
  4. Subtract the two like fractions:
    450/2450 - 8820/2450 = 450 - 8820/2450 = -8370/2450
  5. After reducing the fraction, the answer is -837/245

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