Answers

Subtract 18/84 from 63/18

1^st number: 3 9/18, 2^nd number: 18/84

63/18 - 18/84 is 23/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 18 × 14 = 252,
   63/18 = 63 × 14/18 × 14 = 882/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   18/84 = 18 × 3/84 × 3 = 54/252
4. Subtract the two like fractions:
   882/252 - 54/252 = 882 - 54/252 = 828/252
5. After reducing the fraction, the answer is 23/7
6. In mixed form: 32/7

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