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Subtract 1/45 from 21/5

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

21/5 - 1/45 is 188/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 45 is 45
  2. For the 1st fraction, since 5 × 9 = 45,
    21/5 = 21 × 9/5 × 9 = 189/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    1/45 = 1 × 1/45 × 1 = 1/45
  4. Subtract the two fractions:
    189/45 - 1/45 = 189 - 1/45 = 188/45
  5. In mixed form: 48/45

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