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Subtract 45/5 from 90/8

1st number: 11 2/8, 2nd number: 9 0/5

90/8 - 45/5 is 9/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 5 is 40
  2. For the 1st fraction, since 8 × 5 = 40,
    90/8 = 90 × 5/8 × 5 = 450/40
  3. Likewise, for the 2nd fraction, since 5 × 8 = 40,
    45/5 = 45 × 8/5 × 8 = 360/40
  4. Subtract the two fractions:
    450/40 - 360/40 = 450 - 360/40 = 90/40
  5. After reducing the fraction, the answer is 9/4
  6. In mixed form: 21/4

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