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Subtract 40/9 from 42/40

1st number: 1 2/40, 2nd number: 4 4/9

42/40 - 40/9 is -611/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 9 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    42/40 = 42 × 9/40 × 9 = 378/360
  3. Likewise, for the 2nd fraction, since 9 × 40 = 360,
    40/9 = 40 × 40/9 × 40 = 1600/360
  4. Subtract the two fractions:
    378/360 - 1600/360 = 378 - 1600/360 = -1222/360
  5. After reducing the fraction, the answer is -611/180

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