If 5 - 5/X = 4 + 4/X, then X =  Choose the most appropriate option:
A) 1
B) 9
C) -1
D) 5/4
E) -4/5
We're given the equation 5 - 5/X = 4 + 4/X. We're asked for the value of X.   The common-denominator of these 4 numbers is X, so we need to multiply both sides of the equation by X, giving us...   5X - 5X/X = 4X + 4X/X   We can then eliminate that denominator, which gives us....   5X - 5 = 4X + 4   9 = X   9
<result>B</result>
If 5 - 5/X = 4 + 4/X, then X =