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Subtract 42/90 from 90/5

1st number: 18 0/5, 2nd number: 42/90

90/5 - 42/90 is 263/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 90 is 90
  2. For the 1st fraction, since 5 × 18 = 90,
    90/5 = 90 × 18/5 × 18 = 1620/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    42/90 = 42 × 1/90 × 1 = 42/90
  4. Subtract the two fractions:
    1620/90 - 42/90 = 1620 - 42/90 = 1578/90
  5. After reducing the fraction, the answer is 263/15
  6. In mixed form: 178/15

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