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Subtract 80/98 from 90/45

1st number: 2 0/45, 2nd number: 80/98

90/45 - 80/98 is 58/49.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 98 is 4410

    Next, find the equivalent fraction of both fractional numbers with denominator 4410
  2. For the 1st fraction, since 45 × 98 = 4410,
    90/45 = 90 × 98/45 × 98 = 8820/4410
  3. Likewise, for the 2nd fraction, since 98 × 45 = 4410,
    80/98 = 80 × 45/98 × 45 = 3600/4410
  4. Subtract the two like fractions:
    8820/4410 - 3600/4410 = 8820 - 3600/4410 = 5220/4410
  5. After reducing the fraction, the answer is 58/49
  6. In mixed form: 19/49

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