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Subtract 16/42 from 3/18

3/18 - 16/42 is -3/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 42 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    3/18 = 3 × 7/18 × 7 = 21/126
  3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
    16/42 = 16 × 3/42 × 3 = 48/126
  4. Subtract the two like fractions:
    21/126 - 48/126 = 21 - 48/126 = -27/126
  5. After reducing the fraction, the answer is -3/14

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