I don't know what type of answer you are looking for. But, if you want to find out what X is than I can give you that.
Fist combine like terms on the right it will be 3x-5 = 2.5x, than subtract 3x from both side making it -5 = -.5x. Than dived both side by -.5. to get -5/-.5 to get 10. x = 10