To find the value of \( m - 4 \) when \( m = 12 \), you simply substitute 12 for \( m \):
\[ m - 4 = 12 - 4 = 8 \]
Thus, the value of \( m - 4 \) is \( 8 \).
To find the value of \( m - 4 \) when \( m = 12 \), you simply substitute 12 for \( m \):
\[ m - 4 = 12 - 4 = 8 \]
Thus, the value of \( m - 4 \) is \( 8 \).