algebra help

Just look at the columns where  f(x) = g(x)

Notice these are      

3      3        and 

6     6

This means that  when x = 1,  f(x) = g(x)   

And when x = 11,  f(x) = g(x)

So.....the x values that make these functions equal  are  the solutions  =

1  and 11