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Subtract 45/42 from 20/10

1st number: 2 0/10, 2nd number: 1 3/42

20/10 - 45/42 is 13/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 42 is 210
  2. For the 1st fraction, since 10 × 21 = 210,
    20/10 = 20 × 21/10 × 21 = 420/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    45/42 = 45 × 5/42 × 5 = 225/210
  4. Subtract the two fractions:
    420/210 - 225/210 = 420 - 225/210 = 195/210
  5. After reducing the fraction, the answer is 13/14

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