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Subtract 42/90 from 45/5

1st number: 9 0/5, 2nd number: 42/90

45/5 - 42/90 is 128/15.

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,
    45/5 = 45 × 18/5 × 18 = 810/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    42/90 = 42 × 1/90 × 1 = 42/90
  4. Subtract the two fractions:
    810/90 - 42/90 = 810 - 42/90 = 768/90
  5. After reducing the fraction, the answer is 128/15
  6. In mixed form: 88/15

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