Answers

Subtract 63/35 from 72/80

1^st number: 72/80, 2^nd number: 1 28/35

72/80 - 63/35 is -9/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 35 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   72/80 = 72 × 7/80 × 7 = 504/560
3. Likewise, for the 2nd fraction, since 35 × 16 = 560,
   63/35 = 63 × 16/35 × 16 = 1008/560
4. Subtract the two like fractions:
   504/560 - 1008/560 = 504 - 1008/560 = -504/560
5. After reducing the fraction, the answer is -9/10

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