13
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $a\oplus b=3a+4b$ for all real numbers $a$ and $b$.  Find $3\oplus 1$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
13
Let $a\oplus b=3a+4b$ for all real numbers $a$ and $b$.  Find $3\oplus 1$.
train