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Subtract 70/40 from 28/50

1st number: 28/50, 2nd number: 1 30/40

28/50 - 70/40 is -119/100.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 40 is 200

    Next, find the equivalent fraction of both fractional numbers with denominator 200
  2. For the 1st fraction, since 50 × 4 = 200,
    28/50 = 28 × 4/50 × 4 = 112/200
  3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
    70/40 = 70 × 5/40 × 5 = 350/200
  4. Subtract the two like fractions:
    112/200 - 350/200 = 112 - 350/200 = -238/200
  5. After reducing the fraction, the answer is -119/100

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