Answers

Subtract 15/7 from 7/80

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

7/80 - 15/7 is -1151/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 7 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   7/80 = 7 × 7/80 × 7 = 49/560
3. Likewise, for the 2nd fraction, since 7 × 80 = 560,
   15/7 = 15 × 80/7 × 80 = 1200/560
4. Subtract the two like fractions:
   49/560 - 1200/560 = 49 - 1200/560 = -1151/560

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