Answer:
Step-by-step explanation:
The answer is -6 because, u will transfer 3 to the other side where 15 is ,so the answer will be 12. Divide 12 by -2 it will be -6.
one more person has to answer now lol
is rational number.......
im pretty sure its N = w^2 + 2w
hope this helps if it does plz brainliest :)