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Subtract 28/40 from 70/50

1st number: 1 20/50, 2nd number: 28/40

70/50 - 28/40 is 7/10.

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,
    70/50 = 70 × 4/50 × 4 = 280/200
  3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
    28/40 = 28 × 5/40 × 5 = 140/200
  4. Subtract the two like fractions:
    280/200 - 140/200 = 280 - 140/200 = 140/200
  5. After reducing the fraction, the answer is 7/10

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