-1/5x - 18 = 2
-x - 18(5) = 2(5)
-x = 10 + 90
-x = 100
x = -100
62.5% is equivalent to 5/8.
<u><em>Explanation</em></u>
For converting any fraction into percentage, we just need to multiply the given fraction by 100.
So, 
So, 62.5% is equivalent to 5/8.
II establishes the lines are parallel, then III renames the parallel lines to refer to specific segments. The order of these statements should be II, III.
IV establishes that BGCH is a parallelogram, then I makes use of the properties of a parallelogram. The order of these statements should be IV, I.
The appropriate choice is ...
... II, III, IV, I . . . . . . . the 3rd selection
The value of that expression is positive whenever 'x' is negative.