Answers

Subtract 45/18 from 20/84

1^st number: 20/84, 2^nd number: 2 9/18

20/84 - 45/18 is -95/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 18 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   20/84 = 20 × 3/84 × 3 = 60/252
3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
   45/18 = 45 × 14/18 × 14 = 630/252
4. Subtract the two like fractions:
   60/252 - 630/252 = 60 - 630/252 = -570/252
5. After reducing the fraction, the answer is -95/42

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