If $(2x+5)(x-3)=14$, find the sum of the possible values of $x$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $(2x+5)(x-3)=14$, find the sum of the possible values of $x$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
.5
If $(2x+5)(x-3)=14$, find the sum of the possible values of $x$.
train