Answer:
The property of equality that can be used to solve x - (-6) = 8 is the addition property of equality.
Step-by-step explanation:
When subtracting a negative in an equality problem, you would have to use the reverse operation which would be the addition property of equality. Subtracting a negative may seem like adding a positive but when it comes to equality property problems, you still use the opposite operation.
x - (-6) = 18
+-6 +-6
x = 12.
12 - (-6) = 18.