Answers

Subtract 27/90 from 7/54

7/54 - 27/90 is -23/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 90 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 54 × 5 = 270,
   7/54 = 7 × 5/54 × 5 = 35/270
3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
   27/90 = 27 × 3/90 × 3 = 81/270
4. Subtract the two like fractions:
   35/270 - 81/270 = 35 - 81/270 = -46/270
5. After reducing the fraction, the answer is -23/135

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