37
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $x$ is doubled and then increased by $7$, the result is $81$. What is the value of $x$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
37
If $x$ is doubled and then increased by $7$, the result is $81$. What is the value of $x$?
train