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Subtract 15/6 from 42/72

1st number: 42/72, 2nd number: 2 3/6

42/72 - 15/6 is -23/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 6 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 72 × 1 = 72,
    42/72 = 42 × 1/72 × 1 = 42/72
  3. Likewise, for the 2nd fraction, since 6 × 12 = 72,
    15/6 = 15 × 12/6 × 12 = 180/72
  4. Subtract the two like fractions:
    42/72 - 180/72 = 42 - 180/72 = -138/72
  5. After reducing the fraction, the answer is -23/12

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