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Subtract 42/56 from 5/80

5/80 - 42/56 is -11/16.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 56 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    5/80 = 5 × 7/80 × 7 = 35/560
  3. Likewise, for the 2nd fraction, since 56 × 10 = 560,
    42/56 = 42 × 10/56 × 10 = 420/560
  4. Subtract the two like fractions:
    35/560 - 420/560 = 35 - 420/560 = -385/560
  5. After reducing the fraction, the answer is -11/16

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