I'm not too sure myself (cause Im a learning student myself at the age of 16 and I learn it in a completely different language) I cant really understand c) sorry for my poor english but I think I have gave you enough tips to do c)
Answer:
This question is incomplete. What exactly are we doing to the equation
PS; You can answer in the comment section. I'd help out there
Answer:
I think it is A, C, E I'm. it too sure, sorry if it's wrong
Answer:
x = 180 - (31 + 40)
Step-by-step explanation:
x = 180 - (31 + 40)