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Subtract 90/30 from 18/15

1st number: 1 3/15, 2nd number: 3 0/30

18/15 - 90/30 is -9/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 30 is 30
  2. For the 1st fraction, since 15 × 2 = 30,
    18/15 = 18 × 2/15 × 2 = 36/30
  3. Likewise, for the 2nd fraction, since 30 × 1 = 30,
    90/30 = 90 × 1/30 × 1 = 90/30
  4. Subtract the two fractions:
    36/30 - 90/30 = 36 - 90/30 = -54/30
  5. After reducing the fraction, the answer is -9/5

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