Answers

Subtract 63/45 from 18/80

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

18/80 - 63/45 is -47/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 45 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   18/80 = 18 × 9/80 × 9 = 162/720
3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
   63/45 = 63 × 16/45 × 16 = 1008/720
4. Subtract the two like fractions:
   162/720 - 1008/720 = 162 - 1008/720 = -846/720
5. After reducing the fraction, the answer is -47/40

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