Answers

Subtract 7/80 from 9/7

1^st number: 1 2/7, 2^nd number: 7/80

9/7 - 7/80 is 671/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 7 × 80 = 560,
   9/7 = 9 × 80/7 × 80 = 720/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   7/80 = 7 × 7/80 × 7 = 49/560
4. Subtract the two like fractions:
   720/560 - 49/560 = 720 - 49/560 = 671/560
5. In mixed form: 1111/560

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