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Subtract 20/18 from 12/10

1st number: 1 2/10, 2nd number: 1 2/18

12/10 - 20/18 is 4/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 18 is 90
  2. For the 1st fraction, since 10 × 9 = 90,
    12/10 = 12 × 9/10 × 9 = 108/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    20/18 = 20 × 5/18 × 5 = 100/90
  4. Subtract the two fractions:
    108/90 - 100/90 = 108 - 100/90 = 8/90
  5. After reducing the fraction, the answer is 4/45

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