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Subtract 7/40 from 12/45

12/45 - 7/40 is 11/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 45 × 8 = 360,
    12/45 = 12 × 8/45 × 8 = 96/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    7/40 = 7 × 9/40 × 9 = 63/360
  4. Subtract the two like fractions:
    96/360 - 63/360 = 96 - 63/360 = 33/360
  5. After reducing the fraction, the answer is 11/120

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