Here is your answer:
−0.178571428571429 as a faction would be " [tex]\frac{178571428571429}{1000000000000000}[/tex] "
How:
All you need to do is count how many digits are in −0.178571428571429 then divide it to get 1000000000000000 or just count how many digits there are after 1 in both numbers.
Hope this helps!
