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Subtract 16/45 from 21/4

1st number: 5 1/4, 2nd number: 16/45

21/4 - 16/45 is 881/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 45 is 180
  2. For the 1st fraction, since 4 × 45 = 180,
    21/4 = 21 × 45/4 × 45 = 945/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    16/45 = 16 × 4/45 × 4 = 64/180
  4. Subtract the two fractions:
    945/180 - 64/180 = 945 - 64/180 = 881/180
  5. In mixed form: 4161/180

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