To solve this equation, we can first combine the terms on the left side by finding a common denominator for the fractions.

The common denominator for 9, 4, and 18 is 36.

So, the equation becomes:

20/36x - 63/36x + 34/36x = -9/36

Now we can combine the terms on the left side:

$20-63+34$/36x = -9/36

-9/36x = -9/36

To solve for x, we can multiply both sides by 36 to get rid of the fraction:

-9x = -9

Now we can divide both sides by -9 to solve for x:

x = 1

Therefore, the solution to the equation is x = 1.