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Subtract 42/40 from 35/36

1st number: 35/36, 2nd number: 1 2/40

35/36 - 42/40 is -7/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 36 × 10 = 360,
    35/36 = 35 × 10/36 × 10 = 350/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    42/40 = 42 × 9/40 × 9 = 378/360
  4. Subtract the two like fractions:
    350/360 - 378/360 = 350 - 378/360 = -28/360
  5. After reducing the fraction, the answer is -7/90

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