Answers

Subtract 49/20 from 20/45

1^st number: 20/45, 2^nd number: 2 9/20

20/45 - 49/20 is -361/180.

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,
   49/20 = 49 × 9/20 × 9 = 441/180
4. Subtract the two like fractions:
   80/180 - 441/180 = 80 - 441/180 = -361/180

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