Answer:
It's B 4
Step-by-step explanation:
i just took the test
4
i dont kniww×wwwwwwwww kud
though this is difficult i know you would get it. Anyhow im real tired... will solve later... gl
4x + (5x+18) = 180-81=99
9x+18=99
9x=99-18=81
x=9