Hello, Meghean,
The term 1/3x, as written, could mean 1/(3x), but I will assume it is supposed to represent (1/3)x. Use the parentheses to make it clear.
First, combine the like terms:
(1/3)x + (2x+8) +x = 205
(1/3)x + 3x+8 = 205
Then, let's multiply both sides by 3 to make the 1/3 equal to 1. (Not really necessary, but it makes the calculation easier once the fraction is removed. See the note below)
1x + 3*3x + 24 = 615
That adds to a total of 10X
10x + 24 = 615
Subtract 24 from both sides
10x = 591
Divide both sides by 10
x = 59.1
Bob
=======================
If you like fractions, you can solve the equation without multiplying by 3:
(1/3)x + 3x+8 = 205
(10/3)x + 8 = 205
(10/3)x = 197
x = (3/10)*197
x = 3*(19.7)
x = 59.1