Answers

Subtract 98/80 from 63/18

1^st number: 3 9/18, 2^nd number: 1 18/80

63/18 - 98/80 is 91/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 18 × 40 = 720,
   63/18 = 63 × 40/18 × 40 = 2520/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   98/80 = 98 × 9/80 × 9 = 882/720
4. Subtract the two like fractions:
   2520/720 - 882/720 = 2520 - 882/720 = 1638/720
5. After reducing the fraction, the answer is 91/40
6. In mixed form: 211/40

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