The answer is D or the fourth choice, 12
Answer:
The formation of the equation is odd, but I assume it's supposed to be:
4k - 10k = -8k
-6k = -8k
-6k + 8k = -8k + 8k
2k = 0
= 
k = 0
Answer:
A
Step-by-step explanation:
Answer:
A. a + b = 180 is the correct option.