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Subtract 2/5 from 7/28

7/28 - 2/5 is -3/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 5 is 140
  2. For the 1st fraction, since 28 × 5 = 140,
    7/28 = 7 × 5/28 × 5 = 35/140
  3. Likewise, for the 2nd fraction, since 5 × 28 = 140,
    2/5 = 2 × 28/5 × 28 = 56/140
  4. Subtract the two fractions:
    35/140 - 56/140 = 35 - 56/140 = -21/140
  5. After reducing the fraction, the answer is -3/20

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