Respuesta :

tonb
if 2x+2x+2x=12, then 6x=12 so x=2. x will be 2. Even in 2x-13. ;-)

The value of 2x-13 with x=2 is 4-13 = -9, but that's another question, isn't it?
the value of x is 2 because 2×2+2×2+2×2=12