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Subtract 42/36 from 20/15

1st number: 1 5/15, 2nd number: 1 6/36

20/15 - 42/36 is 1/6.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 15 × 12 = 180,
    20/15 = 20 × 12/15 × 12 = 240/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    42/36 = 42 × 5/36 × 5 = 210/180
  4. Subtract the two like fractions:
    240/180 - 210/180 = 240 - 210/180 = 30/180
  5. After reducing the fraction, the answer is 1/6

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