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Subtract 42/6 from 20/15

1st number: 1 5/15, 2nd number: 7 0/6

20/15 - 42/6 is -17/3.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 6 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 15 × 2 = 30,
    20/15 = 20 × 2/15 × 2 = 40/30
  3. Likewise, for the 2nd fraction, since 6 × 5 = 30,
    42/6 = 42 × 5/6 × 5 = 210/30
  4. Subtract the two like fractions:
    40/30 - 210/30 = 40 - 210/30 = -170/30
  5. After reducing the fraction, the answer is -17/3

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