how do I order the following from least to greatset and show all work -7/8,-5/6,6,8,-5

With the fractions all you need to do is divide the numerator by the denominator. You will see which number is greater.

Remember that negative numbers are the same as positive numbers in that they get greater as they move away from 0, only from right to left instead of left to right.
-8,-7,-6,-5,-4,...0,4,5,6,7,8, etc.

Does that help?