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Subtract 45/50 from 21/4

1st number: 5 1/4, 2nd number: 45/50

21/4 - 45/50 is 87/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 50 is 100
  2. For the 1st fraction, since 4 × 25 = 100,
    21/4 = 21 × 25/4 × 25 = 525/100
  3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
    45/50 = 45 × 2/50 × 2 = 90/100
  4. Subtract the two fractions:
    525/100 - 90/100 = 525 - 90/100 = 435/100
  5. After reducing the fraction, the answer is 87/20
  6. In mixed form: 47/20

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