To find the value of \( m \), we can start with the equation:
\[ 12 + 7 + m = 30 \]
First, we can combine the numbers 12 and 7:
\[ 19 + m = 30 \]
Next, we isolate \( m \) by subtracting 19 from both sides:
\[ m = 30 - 19 \]
Calculating that gives us:
\[ m = 11 \]
So, the value of \( m \) is 11. You can put this value in the response area.