Answers

Subtract 2/20 from 20/45

20/45 - 2/20 is 31/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   20/45 = 20 × 4/45 × 4 = 80/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   2/20 = 2 × 9/20 × 9 = 18/180
4. Subtract the two like fractions:
   80/180 - 18/180 = 80 - 18/180 = 62/180
5. After reducing the fraction, the answer is 31/90

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