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Subtract 10/5 from 8/84

1st number: 8/84, 2nd number: 2 0/5

8/84 - 10/5 is -40/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 5 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 84 × 5 = 420,
    8/84 = 8 × 5/84 × 5 = 40/420
  3. Likewise, for the 2nd fraction, since 5 × 84 = 420,
    10/5 = 10 × 84/5 × 84 = 840/420
  4. Subtract the two like fractions:
    40/420 - 840/420 = 40 - 840/420 = -800/420
  5. After reducing the fraction, the answer is -40/21

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