Answers

Subtract 20/36 from 15/30

15/30 - 20/36 is -1/18.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 36 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 30 × 6 = 180,
   15/30 = 15 × 6/30 × 6 = 90/180
3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
   20/36 = 20 × 5/36 × 5 = 100/180
4. Subtract the two like fractions:
   90/180 - 100/180 = 90 - 100/180 = -10/180
5. After reducing the fraction, the answer is -1/18

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