Respuesta :
b = -9 that is the answer that i came up with i passed algebra with a A+ so that should be it.
[tex]3b + 9 = -18[/tex]
[tex]3b=-18-9[/tex]
[tex]3b=-27[/tex]
[tex]b=-27/3[/tex]
[tex]b=-9[/tex]
[tex]3b=-18-9[/tex]
[tex]3b=-27[/tex]
[tex]b=-27/3[/tex]
[tex]b=-9[/tex]