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Subtract 16/45 from 21/8

1st number: 2 5/8, 2nd number: 16/45

21/8 - 16/45 is 817/360.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 45 is 360
  2. For the 1st fraction, since 8 × 45 = 360,
    21/8 = 21 × 45/8 × 45 = 945/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    16/45 = 16 × 8/45 × 8 = 128/360
  4. Subtract the two fractions:
    945/360 - 128/360 = 945 - 128/360 = 817/360
  5. In mixed form: 297/360

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