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Subtract 70/45 from 98/90

1st number: 1 8/90, 2nd number: 1 25/45

98/90 - 70/45 is -7/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 45 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 90 × 1 = 90,
    98/90 = 98 × 1/90 × 1 = 98/90
  3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
    70/45 = 70 × 2/45 × 2 = 140/90
  4. Subtract the two like fractions:
    98/90 - 140/90 = 98 - 140/90 = -42/90
  5. After reducing the fraction, the answer is -7/15

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