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Subtract 1/90 from 42/60

42/60 - 1/90 is 31/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 60 × 3 = 180,
    42/60 = 42 × 3/60 × 3 = 126/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    1/90 = 1 × 2/90 × 2 = 2/180
  4. Subtract the two like fractions:
    126/180 - 2/180 = 126 - 2/180 = 124/180
  5. After reducing the fraction, the answer is 31/45

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