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Subtract 3/10 from 42/2

1st number: 21 0/2, 2nd number: 3/10

42/2 - 3/10 is 207/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 10 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 2 × 5 = 10,
    42/2 = 42 × 5/2 × 5 = 210/10
  3. Likewise, for the 2nd fraction, since 10 × 1 = 10,
    3/10 = 3 × 1/10 × 1 = 3/10
  4. Subtract the two like fractions:
    210/10 - 3/10 = 210 - 3/10 = 207/10
  5. In mixed form: 207/10

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