Answers

Subtract 80/63 from 72/45

1^st number: 1 27/45, 2^nd number: 1 17/63

72/45 - 80/63 is 104/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 45 × 7 = 315,
   72/45 = 72 × 7/45 × 7 = 504/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   80/63 = 80 × 5/63 × 5 = 400/315
4. Subtract the two like fractions:
   504/315 - 400/315 = 504 - 400/315 = 104/315

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