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Subtract 8/4 from 42/10

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

42/10 - 8/4 is 11/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 4 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 10 × 2 = 20,
    42/10 = 42 × 2/10 × 2 = 84/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    8/4 = 8 × 5/4 × 5 = 40/20
  4. Subtract the two like fractions:
    84/20 - 40/20 = 84 - 40/20 = 44/20
  5. After reducing the fraction, the answer is 11/5
  6. In mixed form: 21/5

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