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Subtract 45/7 from 18/12

1st number: 1 6/12, 2nd number: 6 3/7

18/12 - 45/7 is -69/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 7 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    18/12 = 18 × 7/12 × 7 = 126/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    45/7 = 45 × 12/7 × 12 = 540/84
  4. Subtract the two like fractions:
    126/84 - 540/84 = 126 - 540/84 = -414/84
  5. After reducing the fraction, the answer is -69/14

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