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Subtract 42/45 from 40/2

1st number: 20 0/2, 2nd number: 42/45

40/2 - 42/45 is 286/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 45 is 90
  2. For the 1st fraction, since 2 × 45 = 90,
    40/2 = 40 × 45/2 × 45 = 1800/90
  3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
    42/45 = 42 × 2/45 × 2 = 84/90
  4. Subtract the two fractions:
    1800/90 - 84/90 = 1800 - 84/90 = 1716/90
  5. After reducing the fraction, the answer is 286/15
  6. In mixed form: 191/15

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