30.16=17.56+5x what is the soloution to this equation what is x

First, you would need to combine like terms. 
30.16 = 17.56 + 5x
12.6 = 5x

Now, all you would have to do is isolate the x. To do this, you would divide both sides by 5. 
x = 2.52

The solution would be 2.52. 

I hope this helps!