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Subtract 1/90 from 75/42

1st number: 1 33/42, 2nd number: 1/90

75/42 - 1/90 is 559/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    75/42 = 75 × 15/42 × 15 = 1125/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    1/90 = 1 × 7/90 × 7 = 7/630
  4. Subtract the two fractions:
    1125/630 - 7/630 = 1125 - 7/630 = 1118/630
  5. After reducing the fraction, the answer is 559/315
  6. In mixed form: 1244/315

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