Answers

Subtract 20/5 from 7/45

1^st number: 7/45, 2^nd number: 4 0/5

7/45 - 20/5 is -173/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 5 is 45
   
   Next, find the equivalent fraction of both fractional numbers with denominator 45
2. For the 1st fraction, since 45 × 1 = 45,
   7/45 = 7 × 1/45 × 1 = 7/45
3. Likewise, for the 2nd fraction, since 5 × 9 = 45,
   20/5 = 20 × 9/5 × 9 = 180/45
4. Subtract the two like fractions:
   7/45 - 180/45 = 7 - 180/45 = -173/45

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