Answers

Subtract 63/80 from 1/7

1/7 - 63/80 is -361/560.

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,
   1/7 = 1 × 80/7 × 80 = 80/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   63/80 = 63 × 7/80 × 7 = 441/560
4. Subtract the two like fractions:
   80/560 - 441/560 = 80 - 441/560 = -361/560

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