solution: We can find the $x$-intercept by setting $y=0$ in the equation.  This gives us $\frac{x}{4} = 1$, so $x =4$, which means $a=4$.  Similarly, letting $x=0$ gives $\frac{y}{12} = 1$, so $y=12$, which means $b=12$.  There are several ways we can find the slope.  First, we could put the equation in slope-intercept form by subtracting $\frac{x}{4}$ from both sides, and then multiplying by 12.  This gives $y = -3x +12$, which tells us that the slope is $-3$ (and confirms our solution for the $y$-intercept).  We also could have noted that since we have already shown that $(4,0)$ and $(0,12)$ are on the line, the slope of the line is $\frac{12 -0}{0-4} = -3$.  Therefore, the desired sum is $4+12 -3 = \boxed{13}$.
prompt.content: <|im_start|>system
  You are a helpful assistant.<|im_end|>
  <|im_start|>user
  If $a$ is the $x$-intercept, $b$ is the $y$-intercept, and $m$ is the slope of the line with equation $\frac{x}4 + \frac{y}{12} = 1$, then what is the value of $a + b + m$?
  Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
  <|im_start|>assistant
  
prompt.role: user
extra_info.answer: 13
extra_info.question: If $a$ is the $x$-intercept, $b$ is the $y$-intercept, and $m$ is the slope of the line with equation $\frac{x}4 + \frac{y}{12} = 1$, then what is the value of $a + b + m$?
extra_info.split: test