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Subtract 7/10 from 1/2

1/2 - 7/10 is -1/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 10 is 10
  2. For the 1st fraction, since 2 × 5 = 10,
    1/2 = 1 × 5/2 × 5 = 5/10
  3. Likewise, for the 2nd fraction, since 10 × 1 = 10,
    7/10 = 7 × 1/10 × 1 = 7/10
  4. Subtract the two fractions:
    5/10 - 7/10 = 5 - 7/10 = -2/10
  5. After reducing the fraction, the answer is -1/5

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