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Subtract 84/72 from 1/28

1st number: 1/28, 2nd number: 1 12/72

1/28 - 84/72 is -95/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 28 × 18 = 504,
    1/28 = 1 × 18/28 × 18 = 18/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    84/72 = 84 × 7/72 × 7 = 588/504
  4. Subtract the two like fractions:
    18/504 - 588/504 = 18 - 588/504 = -570/504
  5. After reducing the fraction, the answer is -95/84

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