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Subtract 7/40 from 7/18

7/18 - 7/40 is 77/360.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 18 × 20 = 360,
    7/18 = 7 × 20/18 × 20 = 140/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    7/40 = 7 × 9/40 × 9 = 63/360
  4. Subtract the two like fractions:
    140/360 - 63/360 = 140 - 63/360 = 77/360

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