To solve the equation \( 13 - 2n = -109 \), follow these steps:
-
Subtract 13 from both sides:
\[ -2n = -109 - 13 \]
\[ -2n = -122 \]
-
Now, divide both sides by -2:
\[ n = \frac{-122}{-2} \]
\[ n = 61 \]
So, the value of \( n \) that makes the equation true is 61.