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Subtract 35/45 from 28/40

28/40 - 35/45 is -7/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 45 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    28/40 = 28 × 9/40 × 9 = 252/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    35/45 = 35 × 8/45 × 8 = 280/360
  4. Subtract the two fractions:
    252/360 - 280/360 = 252 - 280/360 = -28/360
  5. After reducing the fraction, the answer is -7/90

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