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Subtract 24/28 from 7/42

7/42 - 24/28 is -29/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 42 × 2 = 84,
    7/42 = 7 × 2/42 × 2 = 14/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    24/28 = 24 × 3/28 × 3 = 72/84
  4. Subtract the two like fractions:
    14/84 - 72/84 = 14 - 72/84 = -58/84
  5. After reducing the fraction, the answer is -29/42

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