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Subtract 5/42 from 21/10

1st number: 2 1/10, 2nd number: 5/42

21/10 - 5/42 is 208/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 10 × 21 = 210,
    21/10 = 21 × 21/10 × 21 = 441/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    5/42 = 5 × 5/42 × 5 = 25/210
  4. Subtract the two like fractions:
    441/210 - 25/210 = 441 - 25/210 = 416/210
  5. After reducing the fraction, the answer is 208/105
  6. In mixed form: 1103/105

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