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Subtract 7/10 from 3/8

3/8 - 7/10 is -13/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 10 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 8 × 5 = 40,
    3/8 = 3 × 5/8 × 5 = 15/40
  3. Likewise, for the 2nd fraction, since 10 × 4 = 40,
    7/10 = 7 × 4/10 × 4 = 28/40
  4. Subtract the two like fractions:
    15/40 - 28/40 = 15 - 28/40 = -13/40

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