To find the integer that makes the addition sentence true, we can set up the equation:
\[ -97 + x = -195 \]
To solve for \( x \), we can isolate \( x \) by adding 97 to both sides:
\[ x = -195 + 97 \]
Calculating the right side:
\[ -195 + 97 = -98 \]
Thus, the integer that makes the addition sentence true is:
\[ \boxed{-98} \]