Provide your best answer for the following math problem. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The problem is: solve the equation for x : 14 ( - x + z ) + 18 = - 14 ( x - z ) - 10
1
x = ( z + 2 ) / 2.