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Subtract 6/8 from 7/18

7/18 - 6/8 is -13/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 8 is 72
  2. For the 1st fraction, since 18 × 4 = 72,
    7/18 = 7 × 4/18 × 4 = 28/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    6/8 = 6 × 9/8 × 9 = 54/72
  4. Subtract the two fractions:
    28/72 - 54/72 = 28 - 54/72 = -26/72
  5. After reducing the fraction, the answer is -13/36

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