1. The problem is to evaluate the expression $-10 + 4$. 2. This is a simple arithmetic problem involving addition of integers. 3. Perform the addition step-by-step: $$-10 + 4 = -6$$ 4. Explanation: Starting at -10 on the number line, moving 4 units to the right (adding 4) results in -6. 5. Therefore, the final answer is $-6$.