Equation in a fraction - have I solved it right?

I'm solving entrance maths example problems from a university. I solved this one:

$\frac{2x-3}{5}-\frac{4x+5}{3}=8$

My solution was -104/14 but in the answer sheet it's -11. Am I wrong? If so why?

Edit: I did the following steps:

1.$3(2x-3)-5(4x+5)=8$

2.$6x-9-20x+25=120$

3.$-14x=104$

4.$x=-104/14$

I'm solving entrance maths example problems from a university. I solved this one:

$\frac{2x-3}{5}-\frac{4x+5}{3}=8$

My solution was -104/14 but in the answer sheet it's -11. Am I wrong? If so why?

Edit: I did the following steps:

1.$3(2x-3)-5(4x+5)=8$

2.$6x-9-20x+25=120$

3.$-14x=104$

4.$x=-104/14$