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Subtract 49/18 from 45/42

1st number: 1 3/42, 2nd number: 2 13/18

45/42 - 49/18 is -104/63.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    45/42 = 45 × 3/42 × 3 = 135/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    49/18 = 49 × 7/18 × 7 = 343/126
  4. Subtract the two like fractions:
    135/126 - 343/126 = 135 - 343/126 = -208/126
  5. After reducing the fraction, the answer is -104/63

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