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Subtract 9/10 from 42/5

1st number: 8 2/5, 2nd number: 9/10

42/5 - 9/10 is 15/2.

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,
    42/5 = 42 × 2/5 × 2 = 84/10
  3. Likewise, for the 2nd fraction, since 10 × 1 = 10,
    9/10 = 9 × 1/10 × 1 = 9/10
  4. Subtract the two like fractions:
    84/10 - 9/10 = 84 - 9/10 = 75/10
  5. After reducing the fraction, the answer is 15/2
  6. In mixed form: 71/2

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