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Subtract 16/90 from 42/12

1st number: 3 6/12, 2nd number: 16/90

42/12 - 16/90 is 299/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 12 × 15 = 180,
    42/12 = 42 × 15/12 × 15 = 630/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    16/90 = 16 × 2/90 × 2 = 32/180
  4. Subtract the two like fractions:
    630/180 - 32/180 = 630 - 32/180 = 598/180
  5. After reducing the fraction, the answer is 299/90
  6. In mixed form: 329/90

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