Answers

Subtract 98/80 from 63/45

1^st number: 1 18/45, 2^nd number: 1 18/80

63/45 - 98/80 is 7/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   63/45 = 63 × 16/45 × 16 = 1008/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   98/80 = 98 × 9/80 × 9 = 882/720
4. Subtract the two like fractions:
   1008/720 - 882/720 = 1008 - 882/720 = 126/720
5. After reducing the fraction, the answer is 7/40

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