Answers

Subtract 4/45 from 45/20

1^st number: 2 5/20, 2^nd number: 4/45

45/20 - 4/45 is 389/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   45/20 = 45 × 9/20 × 9 = 405/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   4/45 = 4 × 4/45 × 4 = 16/180
4. Subtract the two like fractions:
   405/180 - 16/180 = 405 - 16/180 = 389/180
5. In mixed form: 229/180

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