what is x?

2(x - 4) - 5x  =  65

First, use the distributive property:

2x - 8 - 5x  =  65

Simplify the left-hand side:

-3x - 8  =  65

Add 8 to both sides:

-3x  =  73

Divide both sides by -3:

x  =  - 73/3

x is the 24th letter of the roman alphabet