Answer:
[tex]3.4 + 0.5y + 1.1 + 4.5 = 0 \\ 4.5 + 0.5y + 4.5 = 0 \\ 9 + 0.5y = 0 \\ 0.5y = - 9 \\ y = \frac{ - 9}{0.5} \\ y = - 18[/tex]
