Answers

Subtract 40/27 from 18/90

1^st number: 18/90, 2^nd number: 1 13/27

18/90 - 40/27 is -173/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 27 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 90 × 3 = 270,
   18/90 = 18 × 3/90 × 3 = 54/270
3. Likewise, for the 2nd fraction, since 27 × 10 = 270,
   40/27 = 40 × 10/27 × 10 = 400/270
4. Subtract the two like fractions:
   54/270 - 400/270 = 54 - 400/270 = -346/270
5. After reducing the fraction, the answer is -173/135

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