Final answer:
To find the result of -4-6, you change the subtraction to addition and add the absolute values, resulting in -10.
Step-by-step explanation:
When subtracting a negative number from a negative number, you effectively add the absolute value of the second number to the first one. The given problem is -4 - 6. To solve this, you change the subtraction sign to an addition sign and also change the sign of the number being subtracted, which in this case is 6. So, the equation becomes -4 + (-6).
Now, following the rule that when two negative numbers are added together, the answer has a negative sign, we add the absolute values of the numbers: 4 + 6 = 10. Therefore, -4 + (-6) = -10.