You didn't put in any parentheses so there is no way for us to tell what's
in the numerators. The way you have it means
and if we subtract x from both sides, there are no variables.
which becomes
But that's false, so I know you didn't mean what you wrote.
Did you mean parentheses around x-10 and x-5, like this?
(x-10)/6 >= (x-5)/9 + 7/18
If so that would mean this:
Multiply through by the LCD of 18
Solve that just like an equation.
Edwin