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Subtract 18/49 from 8/28

8/28 - 18/49 is -4/49.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 49 is 196
  2. For the 1st fraction, since 28 × 7 = 196,
    8/28 = 8 × 7/28 × 7 = 56/196
  3. Likewise, for the 2nd fraction, since 49 × 4 = 196,
    18/49 = 18 × 4/49 × 4 = 72/196
  4. Subtract the two fractions:
    56/196 - 72/196 = 56 - 72/196 = -16/196
  5. After reducing the fraction, the answer is -4/49

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