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Subtract 24/21 from 7/42

1st number: 7/42, 2nd number: 1 3/21

7/42 - 24/21 is -41/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 21 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 42 × 1 = 42,
    7/42 = 7 × 1/42 × 1 = 7/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    24/21 = 24 × 2/21 × 2 = 48/42
  4. Subtract the two like fractions:
    7/42 - 48/42 = 7 - 48/42 = -41/42

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