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Subtract 1/90 from 42/8

1st number: 5 2/8, 2nd number: 1/90

42/8 - 1/90 is 943/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 90 is 360
  2. For the 1st fraction, since 8 × 45 = 360,
    42/8 = 42 × 45/8 × 45 = 1890/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    1/90 = 1 × 4/90 × 4 = 4/360
  4. Subtract the two fractions:
    1890/360 - 4/360 = 1890 - 4/360 = 1886/360
  5. After reducing the fraction, the answer is 943/180
  6. In mixed form: 543/180

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