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Subtract 42/36 from 1/90

1st number: 1/90, 2nd number: 1 6/36

1/90 - 42/36 is -52/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 36 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 90 × 2 = 180,
    1/90 = 1 × 2/90 × 2 = 2/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    42/36 = 42 × 5/36 × 5 = 210/180
  4. Subtract the two like fractions:
    2/180 - 210/180 = 2 - 210/180 = -208/180
  5. After reducing the fraction, the answer is -52/45

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