Find the value of x.
8
10
12
3x-6
x = [?]

Answer:
[tex] \frac{3x - 6}{(3x - 6 )+ 12} = \frac{10}{18} \\ \frac{3x - 6}{3x + 6} = \frac{5}{9} \\ by \: cross \: multiply \: we \: get \\ 27x - 54 = 15x + 30 \\ 12x = 84 \\ \boxed{x = 7}[/tex]