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Subtract 30/84 from 30/45

30/45 - 30/84 is 13/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 84 is 1260
  2. For the 1st fraction, since 45 × 28 = 1260,
    30/45 = 30 × 28/45 × 28 = 840/1260
  3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
    30/84 = 30 × 15/84 × 15 = 450/1260
  4. Subtract the two fractions:
    840/1260 - 450/1260 = 840 - 450/1260 = 390/1260
  5. After reducing the fraction, the answer is 13/42

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