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Subtract 90/54 from 40/45

1st number: 40/45, 2nd number: 1 36/54

40/45 - 90/54 is -7/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 54 is 270
  2. For the 1st fraction, since 45 × 6 = 270,
    40/45 = 40 × 6/45 × 6 = 240/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    90/54 = 90 × 5/54 × 5 = 450/270
  4. Subtract the two fractions:
    240/270 - 450/270 = 240 - 450/270 = -210/270
  5. After reducing the fraction, the answer is -7/9

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