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Subtract 21/84 from 90/2

1st number: 45 0/2, 2nd number: 21/84

90/2 - 21/84 is 179/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 84 is 84
  2. For the 1st fraction, since 2 × 42 = 84,
    90/2 = 90 × 42/2 × 42 = 3780/84
  3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
    21/84 = 21 × 1/84 × 1 = 21/84
  4. Subtract the two fractions:
    3780/84 - 21/84 = 3780 - 21/84 = 3759/84
  5. After reducing the fraction, the answer is 179/4
  6. In mixed form: 443/4

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