You and your friend live 5 miles apart. he says that it is 5 miles from his house to your house and -5 miles from your house. what is the error in his argument

its -5 miles because  he only  lives 5 miles apart and takes him at least 5 miles to leave his friends house

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right