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Subtract 42/45 from 20/3

1st number: 6 2/3, 2nd number: 42/45

20/3 - 42/45 is 86/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 45 is 45
  2. For the 1st fraction, since 3 × 15 = 45,
    20/3 = 20 × 15/3 × 15 = 300/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    42/45 = 42 × 1/45 × 1 = 42/45
  4. Subtract the two fractions:
    300/45 - 42/45 = 300 - 42/45 = 258/45
  5. After reducing the fraction, the answer is 86/15
  6. In mixed form: 511/15

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