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Subtract 35/28 from 70/80

1st number: 70/80, 2nd number: 1 7/28

70/80 - 35/28 is -3/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 28 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    70/80 = 70 × 7/80 × 7 = 490/560
  3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
    35/28 = 35 × 20/28 × 20 = 700/560
  4. Subtract the two like fractions:
    490/560 - 700/560 = 490 - 700/560 = -210/560
  5. After reducing the fraction, the answer is -3/8

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