Answer: First off, what answer are you looking for? it's hard for me to answer something without specification.
Step-by-step explanation:
Answer:
A is true but I dont know the rest I am very sorry .-.
Step-by-step explanation:
I Just added 18 + 12 = 30 + 10 = 40 and that is why A is true
The equation would be -5+(-12), so the answer would be -17 :)