4x + 8 = [tex]\frac{2}{3}[/tex](9 + x)
12x + 24 = 2(9 + x) multiplied both sides by 3
12x + 24 = 18 + 2x distributed 2 on the right side
10x + 24 = 18 subtracted 2x from both sides
10x = -6 subtracted 24 from both sides
[tex]\frac{10x}{10} = \frac{-6}{10}[/tex] divided both sides by 10
x = [tex]\frac{-3}{5}[/tex]
Answer: [tex]\frac{-3}{5}[/tex]