Answers

Subtract 20/18 from 15/30

1^st number: 15/30, 2^nd number: 1 2/18

15/30 - 20/18 is -11/18.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 18 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 30 × 3 = 90,
   15/30 = 15 × 3/30 × 3 = 45/90
3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
   20/18 = 20 × 5/18 × 5 = 100/90
4. Subtract the two like fractions:
   45/90 - 100/90 = 45 - 100/90 = -55/90
5. After reducing the fraction, the answer is -11/18

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