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Subtract 2/7 from 1/4

1/4 - 2/7 is -1/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 7 is 28
  2. For the 1st fraction, since 4 × 7 = 28,
    1/4 = 1 × 7/4 × 7 = 7/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    2/7 = 2 × 4/7 × 4 = 8/28
  4. Subtract the two fractions:
    7/28 - 8/28 = 7 - 8/28 = -1/28

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