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Subtract 18/72 from 6/84

6/84 - 18/72 is -5/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 84 × 6 = 504,
    6/84 = 6 × 6/84 × 6 = 36/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    18/72 = 18 × 7/72 × 7 = 126/504
  4. Subtract the two like fractions:
    36/504 - 126/504 = 36 - 126/504 = -90/504
  5. After reducing the fraction, the answer is -5/28

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