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Subtract 30/18 from 12/10

1st number: 1 2/10, 2nd number: 1 12/18

12/10 - 30/18 is -7/15.

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,
    30/18 = 30 × 5/18 × 5 = 150/90
  4. Subtract the two fractions:
    108/90 - 150/90 = 108 - 150/90 = -42/90
  5. After reducing the fraction, the answer is -7/15

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