Answers

Subtract 45/54 from 4/90

4/90 - 45/54 is -71/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 90 × 3 = 270,
   4/90 = 4 × 3/90 × 3 = 12/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   45/54 = 45 × 5/54 × 5 = 225/270
4. Subtract the two like fractions:
   12/270 - 225/270 = 12 - 225/270 = -213/270
5. After reducing the fraction, the answer is -71/90

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