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Subtract 42/15 from 3/36

1st number: 3/36, 2nd number: 2 12/15

3/36 - 42/15 is -163/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 15 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 36 × 5 = 180,
    3/36 = 3 × 5/36 × 5 = 15/180
  3. Likewise, for the 2nd fraction, since 15 × 12 = 180,
    42/15 = 42 × 12/15 × 12 = 504/180
  4. Subtract the two like fractions:
    15/180 - 504/180 = 15 - 504/180 = -489/180
  5. After reducing the fraction, the answer is -163/60

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