Answers

Subtract 72/63 from 98/80

1^st number: 1 18/80, 2^nd number: 1 9/63

98/80 - 72/63 is 23/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 63 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 80 × 63 = 5040,
   98/80 = 98 × 63/80 × 63 = 6174/5040
3. Likewise, for the 2nd fraction, since 63 × 80 = 5040,
   72/63 = 72 × 80/63 × 80 = 5760/5040
4. Subtract the two like fractions:
   6174/5040 - 5760/5040 = 6174 - 5760/5040 = 414/5040
5. After reducing the fraction, the answer is 23/280

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