Do you have any options? If not, try going with this method to help you understand this problem a little bit better :) Here we go!
-3 + 8(x) - 5 {-8} = ?
8(x) = ? You have to solve this to make it more "easier" if that makes sense
From the looks of it you have to divide by the number, which we call 8
Since, we have only one solution in this problem, the value of "x" is 0
\(x = 0\)
And not all one solution problem(s) always equal "0". .. it can equal any number sometimes
Good Luck!
