Answers

Subtract 15/20 from 63/18

1^st number: 3 9/18, 2^nd number: 15/20

63/18 - 15/20 is 11/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 18 × 10 = 180,
   63/18 = 63 × 10/18 × 10 = 630/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   15/20 = 15 × 9/20 × 9 = 135/180
4. Subtract the two like fractions:
   630/180 - 135/180 = 630 - 135/180 = 495/180
5. After reducing the fraction, the answer is 11/4
6. In mixed form: 23/4

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