(-138*7)-193+886

Let's calculate the expression step by step.

1. Calculate \(-138 \times 7\): \[ -138 \times 7 = -966 \]

2. Now substitute that back into the expression: \[ -966 - 193 + 886 \]

3. Next, calculate \(-966 - 193\): \[ -966 - 193 = -1159 \]

4. Finally, add 886: \[ -1159 + 886 = -273 \]

So, the final result is: \[ \boxed{-273} \]