ok, when we say "solve (an equation) for x" it means we want you to get x by itself on one side of the equation, that is, you should end up with "x = something"

now when we have a coefficient of x (that's the number in front of x) all we do (whether we have decimals or whole numbers) is divided both sides of the equation by the coefficient of x. that way, the coefficient of x will cancel with the number we divided by (since any number divided by itself is 1) and we would end up with 1x = soemthing, but 1x is just x. so here we go:

....it is not necessary to write this step, i just wanted to show you how the numbers cancel. now we have 1x/1, which is just x, on one side, just what we wanted, now just calculate the other side

to three decimal places