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Subtract 42/12 from 90/6

1st number: 15 0/6, 2nd number: 3 6/12

90/6 - 42/12 is 23/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 12 is 12

    Next, find the equivalent fraction of both fractional numbers with denominator 12
  2. For the 1st fraction, since 6 × 2 = 12,
    90/6 = 90 × 2/6 × 2 = 180/12
  3. Likewise, for the 2nd fraction, since 12 × 1 = 12,
    42/12 = 42 × 1/12 × 1 = 42/12
  4. Subtract the two like fractions:
    180/12 - 42/12 = 180 - 42/12 = 138/12
  5. After reducing the fraction, the answer is 23/2
  6. In mixed form: 111/2

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