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Subtract 9/10 from 20/5

1st number: 4 0/5, 2nd number: 9/10

20/5 - 9/10 is 31/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 10 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 5 × 2 = 10,
    20/5 = 20 × 2/5 × 2 = 40/10
  3. Likewise, for the 2nd fraction, since 10 × 1 = 10,
    9/10 = 9 × 1/10 × 1 = 9/10
  4. Subtract the two like fractions:
    40/10 - 9/10 = 40 - 9/10 = 31/10
  5. In mixed form: 31/10

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