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Subtract 18/10 from 7/18

1st number: 7/18, 2nd number: 1 8/10

7/18 - 18/10 is -127/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 10 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    7/18 = 7 × 5/18 × 5 = 35/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    18/10 = 18 × 9/10 × 9 = 162/90
  4. Subtract the two like fractions:
    35/90 - 162/90 = 35 - 162/90 = -127/90

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