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Subtract 45/18 from 4/10

1st number: 4/10, 2nd number: 2 9/18

4/10 - 45/18 is -21/10.

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,
    4/10 = 4 × 9/10 × 9 = 36/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    45/18 = 45 × 5/18 × 5 = 225/90
  4. Subtract the two fractions:
    36/90 - 225/90 = 36 - 225/90 = -189/90
  5. After reducing the fraction, the answer is -21/10

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