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Subtract 3/45 from 21/5

1st number: 4 1/5, 2nd number: 3/45

21/5 - 3/45 is 62/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 45 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    3/45 = 3 × 1/45 × 1 = 3/45
  4. Subtract the two like fractions:
    189/45 - 3/45 = 189 - 3/45 = 186/45
  5. After reducing the fraction, the answer is 62/15
  6. In mixed form: 42/15

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