Answers

Subtract 4/7 from 9/80

9/80 - 4/7 is -257/560.

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,
   9/80 = 9 × 7/80 × 7 = 63/560
3. Likewise, for the 2nd fraction, since 7 × 80 = 560,
   4/7 = 4 × 80/7 × 80 = 320/560
4. Subtract the two like fractions:
   63/560 - 320/560 = 63 - 320/560 = -257/560

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