Add like terms.
-9x=-3x
then add 3x to both sides canceling out the entirety of the right side
-6x=0
divide by -6
x=0/-6
Explanation:
Simply put, proper tongue positioning occurs when someone gently rests their tongue on the roof of the mouth and away from the teeth. During rest, the lips should also be closed, and the teeth slightly parted
mark brainlist
I think the answer would be to writing/speaking to explain or entertain the reader/listener.